| |  | 
  | |  |
 |  |  | | Ryuma Mukai |  | | Residence: | Costa Mesa, CA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
96th Dudley Cup Jr. Tourn., March 31, 2012
 16th Northridge Spring Jr. Tourn., April 2, 2012
 Woodbridge TC Spring Jr. Open Tourn., April 14, 2012
 Anaheim TC Spring Jr. Open Tourn., April 28, 2012
 West Coast TA Jr. Open Tourn., September 28, 2012
 West Coast Tennis South Bay Fall Open, October 13, 2012
 12th Annual JCC Jr. Open Tourn., October 20, 2012
 13th Plaza Racquet Club Jr. Open Chmps., November 3, 2012
 21st Westcoast Winter Jr. Open/Sat., November 17, 2012
 49th Annual Anaheim Jr. Tourn., December 1, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Kyle McCann | | 6-2; 6-3 |
|  |  |
Lakewood Open & Satellite Tourn., December 8, 2012
 37th Claremont Club Jr. Tourn., December 15, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Clayton Baker | | 6-3; 6-1 | | 16 | Loss | Perik Nguyen | | 7-6(5); 6-2 |
|  |  |
22nd SoCal Christmas Jr. Tourn., December 26, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Jason Wu | | 6-4; 5-7; 11-9 |
|  |  |
* The ranking calculation does not count this match.
| |  |  | |