| 2021 US National Table Tennis Championships
 Mahadevan Arivazhakan
 Wins
| Opponent - Click name for results | USATT # | Rating | Format | Event - Click event for draws and results | Scores | 
|---|
 | Jason Liu | 263284 | 1732 | RR | Boys' Singles U17 | 4,-7,8,9 |  | Joseph Bruno | 223822 | 846 | RR | Boys' Singles U17 | 4,8,8 |  | Michael Chang | 230483 | 1430 | RR | Boys' Singles U15 | 6,10,4 |  | Allen Shen | 270203 | 990 | RR | Boys' Singles U15 | 3,10,5 |  | Aaryan Jain | 97924 | 1609 | RR | U2300 | -12,-6,3,9,1 |  | Reginald Sotero | 76208 | 1861 | RR | U2200 | 7,8,10 |  | Geetha Krishna | 224135 | 1435 | RR | U2200 | 10,9,12 |  | Rick Massoth | 31289 | 1783 | RR | U2000 | 5,2,8 |  | Ed Cohen | 25364 | 1654 | RR | U2000 | 9,4,4 |  | Tanish Balamurugan | 230805 | 1368 | RR | U2000 | 6,5,9 | 
 
  Losses| Opponent - Click name for results | USATT # | Rating | Format | Event - Click event for draws and results | Scores | 
|---|
 | Anav Gupta | 202363 | 2278 | RR | Boys' Singles U19 | 4,9,3 |  | Handson Li | 95284 | 2144 | RR | Boys' Singles U19 | 4,1,7 |  | Nishant Lebaka | 220808 | 2265 | RR | Boys' Singles U17 | 8,6,4 |  | William Yang | 203238 | 2064 | RR | Boys' Singles U15 | -10,8,4,6 |  | Rachel Wang | 96633 | 2217 | RR | U2300 | -11,5,3,8 |  | Piotr Soja | 82335 | 2057 | RR | U2300 | 3,5,5 |  | Jenson Van Emburgh | 89159 | 2084 | SE | U2200-Prelims | 8,-9,9,7 |  | Todd Klinger | 212177 | 1824 | SE | U2000-Prelims | 8,12,9 | 
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