| 2021 US National Table Tennis Championships
 Paul Nielsen
 Wins
| Opponent - Click name for results | USATT # | Rating | Format | Event - Click event for draws and results | Scores | 
|---|
 | Martin Mainster | 90843 | 1543 | RR | Men's 75+ Singles | 3,4,5 |  | Stuffy Singer | 250233 | 1064 | RR | Men's 75+ Singles | 5,10,8 |  | Jim Chase | 1170064 | 799 | RR | Men's 75+ Singles | 2,6,10 |  | John Shultz | 55341 | 1434 | RR | Men's 80+ Singles | 5,5,1 |  | Jim Chase | 1170064 | 799 | RR | Men's 80+ Singles | 6,3,5 |  | Tianze Shen | 1171920 | 0 | RR | U1800 | 9,2,4 |  | Anna Yu | 1171773 | 450 | RR | U1600 | 6,3,2 |  | Dana Hanson | 6421 | 1407 | RR | Men's 70+ Singles | 7,1,7 | 
 
  Losses| Opponent - Click name for results | USATT # | Rating | Format | Event - Click event for draws and results | Scores | 
|---|
 | Pete May | 8146 | 1868 | RR | Men's 75+ Singles | 6,6,7 |  | Pete May | 8146 | 1868 | SE | Men's 80+ Singles-Finals | 6,2,7 |  | Kaylyn Hur | 1164203 | 1829 | RR | U1800 | 6,-9,4,4 |  | Jonathan Mann | 1164157 | 1449 | RR | U1800 | -5,9,5,7 |  | Vishruth Dinesh | 269658 | 1443 | RR | U1600 | 8,-8,5,8 |  | Eric Iosup | 93553 | 1127 | RR | U1600 | 10,-10,9,-6,7 |  | Richard Mcafee | 43720 | 2011 | RR | Men's 65+ Singles | 5,3,4 |  | Tong Lai Yu | 21768 | 1696 | RR | Men's 65+ Singles | 7,7,8 |  | Kelvin Lee | 216968 | 1110 | RR | Men's 65+ Singles | 7,-8,-14,8,6 |  | Frank Zandpour | 51131 | 1559 | RR | Men's 70+ Singles | -9,7,5,-10,4 | 
 |