Mamo Osanai

Current standing

Week ending Aug 9, 2026

Career record

Career high

#156

Weeks ranked

1422

Ranked since

1997

Ranking events

428

Wins

4

Career high, weeks at number one and weeks ranked are counted from the weekly ranking itself. Ranking events and wins are as published by OWGR, and cover events that predate our tournament records.

Tournament results

428 ranking events since 1997. MC is a missed cut and WD a withdrawal, shown where the scorecard evidences it; a dash means no finishing position was recorded.

1. 2024-09elite grips challenge—
2. 2019-10JGTO Novil Final7
3. 2019-10Ryo Ishikawa everyone PROJECT Challenge4
4. 2019-10TOSHIN CHALLENGE IN Meishin Yokaichi CC—
5. 2019-09Elite Grips Challenge—
6. 2019-09HEIWA PGM Challenge II Road to CHAMPIONSHIP20
7. 2019-09Delight Works ASP Challenge15
8. 2019-08TI Challenge in Tojonomori38
9. 2019-06Dunlop SRIXON Fukushima Open—
10. 2019-06Minamiakita CC Michinoku Challenge—
11. 2019-06LANDIC CHALLENGE 758
12. 2019-06Taiheiyo Club Challenge Tournament—
13. 2019-05HEIWA PGM Challenge I Road to CHAMPIONSHIP46
14. 2019-04Japan Create Challenge in Fukuokaraizan64
15. 2019-04i Golf Shaper Challenge in Tsukushigaoka17
16. 2019-04Novil Cup—
17. 2018-05Gate Way To The Open Mizuno Open at The Royal GC—
18. 2016-04Token Homemate Cup—
19. 2015-07Shigeo Nagashima Invitational SEGA SAMMY CUP—
20. 2015-05The Crowns—
21. 2015-04Token Homemate Cup15
22. 2014-09ANA Open—
23. 2014-09Fujisankei Classic—
24. 2014-08RZ EVERLASTING KBC Augusta—
25. 2014-08Dunlop SRIXON Fukushima Open Golf Tournament65
26. 2014-07Nagashima Shigeo INVITATIONAL SEGA SAMMY Cup63
27. 2014-06Japan Golf Tour Championship MORI Building Cup Shishido Hills—
28. 2014-06Gate Way To The Open Mizuno Open50
29. 2014-05Kansai Open Golf Championship—
30. 2014-04Tsuruya Open—
31. 2014-04TOKEN HOMEMATE CUP59
32. 2014-03Indonesia PGA Championship29
33. 2013-12Casio World Open44
34. 2013-11Mitsui Sumitomo VISA Taiheiyo Masters—
35. 2013-11HEIWA PGM DREAM CUP IN KASUMIGAURA42
36. 2013-11Mynavi ABC Championship39
37. 2013-10Bridgestone Open21
38. 2013-10TOSHIN GOLF TOURNAMENT—
39. 2013-10Coca-Cola Tokai Classic60
40. 2013-09ANA Open56
41. 2013-09Fujisankei Classic—
42. 2013-09Vana H Cup KBC Augusta65
43. 2013-08Kansai Open Golf Championship—
44. 2013-07Nagashima Shigeo INVITATIONAL SEGA SAMMY Cup—
45. 2013-06Gate Way To The Open Mizuno Open38
46. 2013-06Japan Golf Tour Championship Shishido Hills60
47. 2013-06Diamond Cup Golf—
48. 2013-05PGA Championship Nissin Cupnoodles Cup—
49. 2013-05The Crowns61
50. 2013-04Tsuruya Open—
51. 2013-04TOKEN HOMEMATE CUP47
52. 2013-03Indonesia PGA Championship—
53. 2012-11Casio World Open—
54. 2012-11Dunlop Phoenix39
55. 2012-11Mitsui Sumitomo VISA Taiheiyo Masters53
56. 2012-10Mynavi ABC Championship54
57. 2012-10Bridgestone Open50
58. 2012-10Canon Open—
59. 2012-09Coca-Cola Tokai Classic56
60. 2012-09ANA Open—
61. 2012-09Toshin Golf Tournament—
62. 2012-09Fujisankei Classic—
63. 2012-08Vana H Cup KBC Augusta—
64. 2012-08Kansai Open Golf Championship22
65. 2012-07Sun Chlorella Classic22
66. 2012-07SEGA Sammy Cup—
67. 2012-06Gate Way To The Open Mizuno Open—
68. 2012-06Japan Golf Tour Championship Citibank Cup Shishido Hills—
69. 2012-05Diamond Cup Golf—
70. 2012-05Totoumi Hamamatsu Open17
71. 2012-05PGA Championship Nissin Cupnoodles Cup—
72. 2012-04The Crowns62
73. 2012-04Tsuruya Open53
74. 2012-04Token Homemate Cup3
75. 2012-03Enjoy Jakarta Indonesia Open22
76. 2011-11Casio World Open—
77. 2011-11Dunlop Phoenix—
78. 2011-11Barclays Singapore Open—
79. 2011-10Mynavi ABC Championship—
80. 2011-10Bridgestone Open—
81. 2011-10Canon Open2
82. 2011-10Coca-Cola Tokai Classic21
83. 2011-09Asia-Pacific Panasonic Open62
84. 2011-09ANA Open—
85. 2011-09Toshin Golf Tournament in Lake Wood7
86. 2011-09Fujisankei Classic—
87. 2011-08Vana H Cup KBC Augusta15
88. 2011-08Kansai Open Golf Championship—
89. 2011-07Sun Chlorella Classic63
90. 2011-07Nagashima Shigeo Invitational Sega Sammy Cup7
91. 2011-06Gateway to the Open Mizuno Open—
92. 2011-06Japan Golf Tour Championship Citibank Cup Shishido Hills—
93. 2011-05Diamond Cup Golf—
94. 2011-05Totoumi Hamamatsu Open—
95. 2011-05PGA Championship Nissin Cupnoodle Cup—
96. 2011-05The Crowns—
97. 2011-04Tsuruya Open—
98. 2011-04Token Homemate Cup21
99. 2010-12Golf Nippon Series JT Cup28
100. 2010-11Casio World Open43
101. 2010-11Dunlop Phoenix14
102. 2010-11Mitsui Sumitomo VISA Taiheiyo Masters31
103. 2010-10Mynavi ABC Championship61
104. 2010-10Bridgestone Open—
105. 2010-10Japan Open Golf Championship22
106. 2010-10Canon Open—
107. 2010-09Asia-Pacific Panasonic Open—
108. 2010-09ANA Open—
109. 2010-09Fujisankei Classic55
110. 2010-08Vana H Cup KBC Augusta50
111. 2010-08Kansai Open Golf Championship44
112. 2010-08Sun Chlorella Classic14
113. 2010-07Nagashima Shigeo INVITATIONAL SEGA SAMMY Cup1
114. 2009-11Casio World Open64
115. 2009-11Dunlop Phoenix46
116. 2009-11Mitsui Sumitomo VISA Taiheiyo Masters54
117. 2009-11The Championship by LEXUS45
118. 2009-11Mynavi ABC Championship33
119. 2009-10Bridgestone Open54
120. 2009-10Japan Open Golf Championship—
121. 2009-10Canon Open17
122. 2009-10Coca-Cola Tokai Classic—
123. 2009-09Asia-Pacific Panasonic Open—
124. 2009-09ANA Open—
125. 2009-09Fujisankei Classic—
126. 2009-08Vana H Cup KBC Augusta—
127. 2009-08Kansai Open Golf Championship18
128. 2009-08Sun Chlorella Classic—
129. 2009-07Nagashima Shigeo INVITATIONAL SEGA SAMMY Cup—
130. 2009-06Gate Way To The Open Mizuno Open Yomiuri Classic—
131. 2009-06Japan PGA Championship—
132. 2009-06UBS Japan Golf Tour Championship ShishidoHills38
133. 2009-05Mitsubishi Diamond Cup Golf—
134. 2009-05The Crowns29
135. 2009-04Tsuruya Open56
136. 2009-04Token Homemate Cup48
137. 2008-11Casio World Open7
138. 2008-11Dunlop Phoenix Tournament—
139. 2008-11Mitsui Sumitomo VISA Taiheiyo Masters11
140. 2008-11The Championship by Lexus62
141. 2008-11mynavi ABC Championship4
142. 2008-10Bridgestone Open—
143. 2008-10Japan Open Golf Championship15
144. 2008-10Canon Open—
145. 2008-10Coca-Cola Tokai Classic—
146. 2008-09Asia-Pacific Panasonic Open52
147. 2008-09ANA Open21
148. 2008-09Fujisankei Classic—
149. 2008-08KBC Augusta55
150. 2008-08Sun Chlorella Classic—
151. 2008-07Nagashima Shigeo INVITATIONAL SEGA SAMMY Cup7
152. 2008-07UBS Japan Golf Tour Championship Shishido Hills15
153. 2008-06Gate Way To The Open Mizuno Open Yomiuri Classic43
154. 2008-06Mitsubishi Diamond Cup Golf22
155. 2008-05Munsingwear Open KSB Cup55
156. 2008-05Japan PGA Championship—
157. 2008-05Pine Valley Beijing Open—
158. 2008-05The Crowns65
159. 2008-04Tsuruya Open56
160. 2008-04Token Homemate Cup49
161. 2007-11Casio World Open—
162. 2007-11Dunlop Phoenix15
163. 2007-11Mitsui Sumitomo VISA Taiheiyo Masters—
164. 2007-10ABC Championship33
165. 2007-10Bridgestone Open—
166. 2007-10Japan Open Golf Championship62
167. 2007-09Coca-Cola Tokai Classic56
168. 2007-09ANA Open27
169. 2007-09Suntory Open28
170. 2007-09Fujisankei Classic—
171. 2007-08KBC Augusta25
172. 2007-08Sun Chlorella Classic7
173. 2007-07Nagashima Shigeo Invitational Sega Sammy Cup6
174. 2007-07Woodone Open Hiroshima—
175. 2007-07UBS Japan Golf Tour Championship52
176. 2007-06Mizuno Open Yomiuri Classic—
177. 2007-06JCB Classic2
178. 2007-05Mitsubishi Diamond Cup34
179. 2007-05Munsingwear Open KSB Cup50
180. 2007-05Japan PGA Championship67
181. 2007-04The Crowns—
182. 2007-04Tsuruya Open—
183. 2007-04Token Homemate Cup40
184. 2006-11Dunlop Phoenix Tournament—
185. 2006-11Mitsui Sumitomo VISA Taiheiyo Masters8
186. 2006-10ABC Championship15
187. 2006-10Bridgestone Open—
188. 2006-10Japan Open Golf Championship61
189. 2006-10Coca Cola Tokai Classic43
190. 2006-09Acom International1
191. 2006-09ANA Open14
192. 2006-09Suntory Open—
193. 2006-09Fujisankei Classic—
194. 2006-08Under Armour KBC Augusta29
195. 2006-08Sun Chlorella Classic—
196. 2006-07Tournament in Omaezaki—
197. 2006-07Sega Sammy Cup9
198. 2006-07Woodone Open Hiroshima23
199. 2006-07UBS Japan Golf Tour Championship68
200. 2006-06Mizuno Open—
201. 2006-06Mandom Lucido Yomiuri Open40
202. 2006-06JCB Classic Sendai34
203. 2006-05Mitsubishi Diamond Cup7
204. 2006-05Munsingwear Open KSB Cup3
205. 2006-05Japan PGA Championship53
206. 2006-04The Crowns18
207. 2006-04Tsuruya Open2
208. 2006-04Token Homemate Cup—
209. 2005-12Okinawa Open—
210. 2005-11Casio World Open12
211. 2005-11Dunlop Phoenix Tournament56
212. 2005-11Mitsui S'tomo VISA Taiheiyo Masters—
213. 2005-11Asahiryokuken. Y. A. Memorial Open12
214. 2005-10ABC Championship31
215. 2005-10Bridgestone Open—
216. 2005-10Coca-Cola Tokai Classic37
217. 2005-09Acom International40
218. 2005-09ANA Open—
219. 2005-09Suntory Open2
220. 2005-09Fujisankei Classic42
221. 2005-08Under Armour KBC Augusta22
222. 2005-08Sun Chlorella Classic24
223. 2005-07Aiful Cup22
224. 2005-07Sega Sammy Cup15
225. 2005-07Wood One Open Hiroshima—
226. 2005-07Japan Golf Tour Champs17
227. 2005-06Mizuno Open Championship—
228. 2005-06Mandom Lucido Yomiuri Open—
229. 2005-06JCB Classic Sendai—
230. 2005-05Mitsubishi Diamond Cup—
231. 2005-05Munsingwear Open KSB Cup—
232. 2005-05Japan PGA Championship43
233. 2005-05The Crowns—
234. 2005-04Tsuruya Open59
235. 2005-03Token Homemate Cup—
236. 2004-12Asia Japan Okinawa Open2
237. 2004-11Casio World Open—
238. 2004-11Dunlop Pheonix Tournament—
239. 2004-11Mitsui S'tomo VISA Taiheiyo Masters60
240. 2004-11Asahi Ryokuken Yomiuri Aso Iizuka54
241. 2004-10ABC Championship—
242. 2004-10Bridgestone Open28
243. 2004-10Coca-Cola Tokai Classic—
244. 2004-10Acom International—
245. 2004-09ANA Open6
246. 2004-09Suntory Open12
247. 2004-08Hisamitsu-KBC Augusta4
248. 2004-08Sun Chlorella Classic17
249. 2004-08Aiful Cup—
250. 2004-07Woodone Open Hiroshima9
251. 2004-07JGT Championship26
252. 2004-06Mizuno Open39
253. 2004-06Mandom Lucido Yomiuri Open64
254. 2004-06JCB Classic Sendai41
255. 2004-05Mitsubishi Diamond Cup53
256. 2004-05Munsingwear Open KSB Cup35
257. 2004-05PGA Championship—
258. 2004-05Fujisankei Classic20
259. 2004-05The Crowns50
260. 2004-04Tsuruya Open34
261. 2004-03Token Homemate Cup—
262. 2003-12Okinawa Open—
263. 2003-11Casio World Open9
264. 2003-11Dunlop Phoenix39
265. 2003-11Mitsui Sumitomo Visa Taiheiyo Mast.24
266. 2003-11ABC Championship42
267. 2003-10Bridgestone Open43
268. 2003-10Japan Open41
269. 2003-10Georgia Tokia Classic—
270. 2003-09Acom International—
271. 2003-09ANA Open—
272. 2003-09Suntory Open65
273. 2003-08Hisamitsu-KBC Augusta7
274. 2003-08Sun-Chlorella Classic—
275. 2003-08Aiful Cup23
276. 2003-07Sato Foods NST Niigata Open54
277. 2003-07Woodone Open Hiroshima—
278. 2003-07JGT Championship—
279. 2003-06Gateway to the Mizuno Open24
280. 2003-06Mandom Lucido Yoiuri Open—
281. 2003-06JCB Classic Sendai—
282. 2003-06Diamond Cup Tournament15
283. 2003-05Musingwear Open KSB Cup—
284. 2003-05JPGA Championship—
285. 2003-05Fujisankei Classic65
286. 2003-05The Crowns37
287. 2003-04Tsuraya Open—
288. 2003-04Token Homemate Cup18
289. 2002-12Japan Asia Okinawa Open62
290. 2002-12Casio World Open52
291. 2002-11Dunlop Phoenix—
292. 2002-11Mitsui Sumitomo Visa Taiheiyo Mas's—
293. 2002-11Philip Morris Championship5
294. 2002-10Bridgestone Open—
295. 2002-10Japan Open—
296. 2002-10Tokai Classic—
297. 2002-09Acom International—
298. 2002-09ANA Open43
299. 2002-09Suntory Open—
300. 2002-09Hisamitsu-KBC Augusta66
301. 2002-08Sun-Chlorella Classic—
302. 2002-08Aiful Cup62
303. 2002-07Sato Foods NST Niigata Open—
304. 2002-07Juken Sangyo Open Hiroshima2
305. 2002-07TPC Iiyama Cup12
306. 2002-06Mizuno Open—
307. 2002-06Tamanoi Yomiuri Open—
308. 2002-06JCB Classic Sendai59
309. 2002-06Diamond Cup Tournament55
310. 2002-05Musingweaqr KSB Cup9
311. 2002-05JPGA Championship38
312. 2002-05Fujisankei Classic27
313. 2002-05The Crowns Tournament—
314. 2002-04Tsuraya Open38
315. 2002-03DyDo Drinco Shizuoka Open26
316. 2002-03Token Corporation Cup—
317. 2001-11Casio World Open11
318. 2001-11Dunlop Phoenix57
319. 2001-11Ube Kosan Open—
320. 2001-10Philip Morris K K Championship12
321. 2001-10Tokai Classic—
322. 2001-09Acom International—
323. 2001-09Mitsui Sumitomo Taiheiyo Open30
324. 2001-09ANA Open8
325. 2001-09Suntory Open—
326. 2001-08Hisamitsu-KBC Augusta—
327. 2001-08Sun Chlorella Classic29
328. 2001-07Aiful Cup—
329. 2001-07Jyuken Sangyo Open Hiroshima46
330. 2001-07Japan Tour Championship Iiyama Cup—
331. 2001-06Tamanoi Yomiuri Open—
332. 2001-06JCB Classic Sendai14
333. 2001-05Diamond Cup Tournament—
334. 2001-05Musingwear Open KSB—
335. 2001-05JPGA Championship—
336. 2001-05Fujisankei Classic10
337. 2001-04The Crowns—
338. 2001-04Asia Pacific Open—
339. 2001-04Tsuraya Open57
340. 2001-03DyDo Drinco Shizuoka Open—
341. 2001-03Token Corporation Cup—
342. 2000-11Casio World Open57
343. 2000-11Dunlop Phoenix—
344. 2000-11Sumitomo Visa Taiheiyo Mst19
345. 2000-11Ube Kosan Open—
346. 2000-10Philip Morris Champ.6
347. 2000-10Bridgestone Open—
348. 2000-10Japan Open Championship—
349. 2000-10Tokai Classic45
350. 2000-09Acom International31
351. 2000-09ANA Open—
352. 2000-09Suntory Open8
353. 2000-09Japan Match Play17
354. 2000-08KBC Augusta8
355. 2000-07J-S Open Hiroshima66
356. 2000-07Japan Tour Players Chmps7
357. 2000-06Mizuno Open—
358. 2000-06Tamanoi Yomiuri Open20
359. 2000-06JCB Sendai Classic7
360. 2000-05Mitsubishi Motors Tourn.—
361. 2000-05Munshingwear Open KSB6
362. 2000-05Japan PGA Champ.48
363. 2000-05Fuji Sankei Classic63
364. 2000-04The Crowns—
365. 2000-04Kirin Open11
366. 2000-04Tsuruya Open—
367. 2000-03DyDo Drinco Shizuoka Open18
368. 2000-03Token Corporation Cup18
369. 2000-01Sony Open—
370. 1999-12Okinawa Open20
371. 1999-12Nippon Series Cp19
372. 1999-11Casio World Open10
373. 1999-11Sum Visa Taih'yo—
374. 1999-11Acom Internat'l31
375. 1999-10Philip Morris Ch18
376. 1999-10Bridgestone Open47
377. 1999-10Tokai Classic—
378. 1999-10Japan Open Champ26
379. 1999-09Jun Classic15
380. 1999-09ANA Open—
381. 1999-09Suntory Open10
382. 1999-09Japan Match Play1
383. 1999-08KBC Augusta41
384. 1999-08Buick Open77
385. 1999-07Aiful Cup42
386. 1999-07Yonex Hiroshima43
387. 1999-06Mizuno Open—
388. 1999-06Yomiuri Open—
389. 1999-05Ube Kosan Open—
390. 1999-05Japan PGA Champ.—
391. 1999-05Fuji Sankei Cl.50
392. 1999-05Chunichi Crowns15
393. 1999-04Kirin Open26
394. 1999-04Tsuruya Open20
395. 1999-04Descente Classic—
396. 1999-03KSB Open—
397. 1999-03DyDo D Shizuoka50
398. 1999-03Token Corpn. Cup36
399. 1998-12Daikyo Open4
400. 1998-12Japan Series20
401. 1998-11Casio World Open15
402. 1998-11Dunlop Phoenix—
403. 1998-11Sm Visa Taiheiyo—
404. 1998-11Acom Internat'l15
405. 1998-11Philip Morris Ch26
406. 1998-10Bridgestone Op.14
407. 1998-10Nikkei Cup50
408. 1998-10Tokai Classic3
409. 1998-09Jun Classic21
410. 1998-09ANA Open10
411. 1998-09Suntory Open1
412. 1998-08KBC Augusta23
413. 1998-08Sanko Grand Sum.58
414. 1998-08NST Niigata Open41
415. 1998-07Aiful Cup51
416. 1998-07Yonex Hiroshima35
417. 1998-06Yomiuri Open11
418. 1998-06Sapporo Tokyu O47
419. 1998-06JCB Clas. Sendai26
420. 1998-05Mitsubishi Ga't—
421. 1997-11Philip Morris Ch41
422. 1997-08Acom Internat'l8
423. 1997-07Nikkei Cup47
424. 1997-07Yonex Hiroshima37
425. 1997-07PGA Philanthropy57
426. 1997-06Mitsubishi Gal't—
427. 1997-05Japan PGA Champ.35
428. 1997-03Token Corp'n Cup—

Tournament wins

4 wins in ranking events since 1986. Recovered from the weekly world ranking, so wins before it began are not counted.

1. Nagashima Shigeo INVITATIONAL SEGA SAMMY CupJul 25, 2010
2. Acom InternationalSep 24, 2006
3. Japan Match PlaySep 5, 1999
4. Suntory OpenSep 13, 1998

Season by season

1. 2026#5023#490832
2. 2025#4915#453952
3. 2024#4566#456614
4. 2022#1840#168532
5. 2021#1738#160152
6. 2020#1626#158640
7. 2019#1622#162252
8. 2018#2006#192552
9. 2017#1925#184353
10. 2016#1843#148252
11. 2015#1487#119052
12. 2014#1548#119552
13. 2013#1178#54852
14. 2012#547#26253
15. 2011#272#24652
16. 2010#296#29152
17. 2009#618#39552
18. 2008#397#30952
19. 2007#307#19952
20. 2006#209#19653
21. 2005#354#33552
22. 2004#381#38152
23. 2003#442#35452
24. 2002#353#32552
25. 2001#390#28452
26. 2000#288#18753
27. 1999#202#15652
28. 1998#178#17852
29. 1997#659#65352