IŌ
🇺🇸
Iapani Ōkubo
USA
Class of 2027 · Born Rocklin, CA · May 23 ·
★★★3-Star
STR
46.6
current (projection)
StrikePrediction · favourite to commit:
San Jose State
26%
4 offers
Rankings
| Recruiting board (consensus) | #123 |
| California | #8 |
| Ranking points (779 pts · 20 events) | #307 |
| STR | 46.6 |
| Junior STR (singles) | 45.5 |
| Doubles STR (results-based) | 45.1 |
Junior Badges
NATTop 300
STATETop 25
Junior Results
DATETOURNAMENT
LEVELRESULT
Wk 1
Houston Classic
Premier
R32
Wk 3
Mackay Championships
National
R32
Wk 5
Gatineau Challenger
Developmental
Quarterfinalist
Wk 7
York Cup
Developmental
Quarterfinalist
Wk 9
Kiel Cup
Developmental
Champion
Wk 10
Houston Open
National
R32
Wk 12
Kraljevo Open
National
Semifinalist
Wk 14
Liberec Championships
National
Finalist
Wk 16
Tokyo Championships
National
Champion
Wk 18
Bruges International
Premier
Quarterfinalist
Wk 19
Leipzig Classic
Premier
R32
Wk 21
Modena Classic
Premier
R32
Wk 23
Visakhapatnam Open
Premier
Champion
Wk 25
Rockhampton International
Premier
Quarterfinalist
Wk 27
Osaka International
Premier
R32
Wk 28
Ferrara Open
Premier
R16
Wk 30
Mexicali Classic
Premier
R32
Wk 32
Karlsruhe International
Premier
Quarterfinalist
Wk 34
Machida Open
Premier
Quarterfinalist
Wk 36
San Luis Open
Premier
R16
Junior Doubles
DATETOURNAMENT
LEVELPARTNERRESULT
Wk 3
Mackay Championships
National
Hady Barrow
Semifinalist
Wk 5
Gatineau Challenger
Developmental
Josh Margolin
Quarterfinalist
Wk 9
Kiel Cup
Developmental
Carr Haber
Semifinalist
Wk 12
Kraljevo Open
National
William Dufour
Semifinalist
Wk 18
Bruges International
Premier
Felipe Nieto
Quarterfinalist
Wk 21
Modena Classic
Premier
Kristian Lefeau
Finalist
Wk 23
Visakhapatnam Open
Premier
Grant Mercado
Quarterfinalist
Wk 25
Rockhampton International
Premier
Connor Watanabe
Finalist
Wk 27
Osaka International
Premier
Lance Ein
Quarterfinalist
Wk 30
Mexicali Classic
Premier
Allan Morgan
Quarterfinalist
Wk 36
San Luis Open
Premier
Caleb de Garmendia
Finalist
Junior Match Record
DATETOURNAMENT
W/LOPPONENTSCORE
Wk 1
Houston Classic Round of 32
L
Tony Carmona
4-6 6-4 6-10
Wk 3
Mackay Championships Round of 32
L
Devan Hậu
7-5 3-6 7-10
Wk 5
Gatineau Challenger Round of 32
W
Xavier Barry
6-1 6-1
Wk 5
Gatineau Challenger Round of 16
W
Wilmer Gutierrez
6-2 3-6 10-4
Wk 5
Gatineau Challenger Quarterfinals
L
Garrett Soñora
2-6 0-6
Wk 7
York Cup Round of 32
W
Marcell Wiese
6-3 6-2
Wk 7
York Cup Round of 16
W
Stijn Otten
6-1 4-6 11-9
Wk 7
York Cup Quarterfinals
L
Sander Verhaegh
2-6 2-6
Wk 9
Kiel Cup Round of 32
W
Omillio Ruskavich
7-6 6-4
Wk 9
Kiel Cup Round of 16
W
Eduardo Espinoza
6-3 6-1
Wk 9
Kiel Cup Quarterfinals
W
Robin Gutiérrez
7-6 6-4
Wk 9
Kiel Cup Semifinals
W
Carr Haber
6-1 6-3
Wk 9
Kiel Cup Final
W
Henri Laurent
7-6 6-2
Wk 10
Houston Open Round of 32
L
Vladislav Putintseva
4-6 6-2 8-10
Wk 12
Kraljevo Open Round of 32
W
William Dufour
6-3 6-2
Wk 12
Kraljevo Open Round of 16
W
Melih Çetin
6-1 6-4
Wk 12
Kraljevo Open Quarterfinals
W
Derrick Forbes
6-3 3-6 10-6
Wk 12
Kraljevo Open Semifinals
L
Carlos Maradona
6-2 4-6 5-10
Wk 14
Liberec Championships Round of 32
W
Graham Talbot
6-3 6-2
Wk 14
Liberec Championships Round of 16
W
Erik Kesslerov
7-5 7-6
Wk 14
Liberec Championships Quarterfinals
W
Theran Lowary
6-3 4-6 10-2
Wk 14
Liberec Championships Semifinals
W
Ross Phillips
6-7 7-5 10-8
Wk 14
Liberec Championships Final
L
Stanley Jacques
3-6 6-1 8-10
Wk 16
Tokyo Championships Round of 32
W
Lakshay Bhatia
5-7 6-3 10-8
Wk 16
Tokyo Championships Round of 16
W
Marco Weaver
6-2 6-2
Wk 16
Tokyo Championships Quarterfinals
W
Jesse Gradney
6-3 6-4
Wk 16
Tokyo Championships Semifinals
W
Ogoh Oshaniwa
2-6 6-4 10-3
Wk 16
Tokyo Championships Final
W
Arturo Conde
7-5 6-1
Wk 18
Bruges International Round of 32
W
Sergey Kanunnikov
6-3 6-4
Wk 18
Bruges International Round of 16
W
Raul Encarnação
6-4 6-7 10-7
Wk 18
Bruges International Quarterfinals
L
Anton Schefflin
2-6 5-7
Wk 19
Leipzig Classic Round of 32
L
Jaiden MacPhie
2-6 6-4 7-10
Wk 21
Modena Classic Round of 32
L
Diego Molina
5-7 7-6 10-12
Wk 23
Visakhapatnam Open Round of 32
W
Felipe Nieto
6-3 6-7 10-8
Wk 23
Visakhapatnam Open Round of 16
W
Jessie Battle
6-1 7-6
Wk 23
Visakhapatnam Open Quarterfinals
W
Kristian Lefeau
4-6 7-6 10-6
Wk 23
Visakhapatnam Open Semifinals
W
Jason Sako
4-6 7-6 10-4
Wk 23
Visakhapatnam Open Final
W
Houston Cáceres
7-6 6-4
Wk 25
Rockhampton International Round of 32
W
Eduardo Alves
6-1 6-0
Wk 25
Rockhampton International Round of 16
W
Jeremiah Dwyer
7-6 1-6 10-8
Wk 25
Rockhampton International Quarterfinals
L
Nick Fu
6-3 3-6 7-10
Wk 27
Osaka International Round of 32
L
Quincy Hiatt
3-6 6-3 7-10
Wk 28
Ferrara Open Round of 32
W
Wes Fehr
6-2 7-6
Wk 28
Ferrara Open Round of 16
L
Min-soo Jeon
6-7 2-6
Wk 30
Mexicali Classic Round of 32
L
Ozan Akers
6-7 7-6 7-10
Wk 32
Karlsruhe International Round of 32
W
Vicente Peralta
6-2 6-1
Wk 32
Karlsruhe International Round of 16
W
Korey Beach
6-1 7-5
Wk 32
Karlsruhe International Quarterfinals
L
Jason Sako
6-7 7-5 7-10
Wk 34
Machida Open Round of 32
W
Allan Morgan
7-6 6-4
Wk 34
Machida Open Round of 16
W
Ozan Messmer
3-6 6-3 10-5
Wk 34
Machida Open Quarterfinals
L
Connor Watanabe
3-6 4-6
Wk 36
San Luis Open Round of 32
W
Javain Roland
6-1 7-6
Wk 36
San Luis Open Round of 16
L
David Holub
3-6 6-7
College List
SCHOOLOFFERINTEREST
SCHOL.STRIKEPRED.STATUS
San Jose State
✓
Hot
½
26%
Finalist
Washington
✓
Hot
½
25%
Finalist
UC San Diego
✓
Hot
½
25%
Finalist
Stanford
✓
Hot
½
24%
Top School
Dreamsheet
Stanford OFFERED
Virginia
North Carolina
Scouting
| Shared service (consensus) | 57.0 |
| Your department | 56.6 |
| 4-year projection | 51.8 |
Ranking History
| DATE | NATIONAL | STATE | STR |
| Early 2027 | #247 | #20 | 44.0 |
| Mid 2027 | #231 | #17 | 44.5 |
| Late 2027 | #212 | #16 | 45.2 |
| Final 2027 | #207 | #15 | 45.4 |
Attributes
| Serve Power | 59 | |
| Serve Accuracy | 58 | |
| Return | 58 | |
| Forehand | 57 | |
| Backhand | 62 | |
| Consistency | 46 | |
| Net Play | 57 | |
| Speed | 51 | |
| Stamina | 61 | |
| Composure | 52 | |
| Clutch | 60 |
Recruiting
| Intended major | Marine Biology |
| Junior tier | National Elite |
| Origin | Domestic |
| Commitment | Uncommitted |
Recruiting Timeline
| Received interest from Washington | early_contact Wk 3 |
| Received interest from UC San Diego | early_contact Wk 3 |
| Received interest from San Jose State | early_contact Wk 4 |
| Offered by Washington | offers Wk 8 |
| Offered by UC San Diego | offers Wk 9 |
| Offered by San Jose State | offers Wk 13 |
| Offered by Stanford | offers Wk 13 |
| Official visit to Washington | visits Wk 16 |
| Official visit to San Jose State | visits Wk 17 |