9-10 Boys Yards
Updated 10/01/25
| Event | Name | Club | Time | Year |
| 50 Freestyle | Bruce Crock | MDI | 27.00 | 1984 New Englands |
| 100 Freestyle | Bruce Crock | MDI | 59.64 | 1984 New Englands |
| 50 Butterfly | Caden LaPlante | MMD | 28.47 | 2022 YMCA States |
| 100 Butterfly | Harry Homans | PBAY | 1:06.19 | 2011 Dual Meet |
| 50 Backstroke | Gavin Monyok | BYB | 31.05 | 2019 Lenny Demuro |
| 100 Backstroke | Liam Reading | CCSC | 1:09.55 | 2008 Dual Meet |
| 50 Breaststroke | Liam Sullivan | MDI | 34.97 | 2011 Dual Meet |
| 100 Breaststroke | Liam Sullivan | MDI | 1:19.00 | 2012 Dual Meet |
| 100 I.M. | Bruce Crock | MDI | 1:07.41 | 1984 New Englands |
| 200 I.M | Liam Sullivan | MDI | 2:23.23 | 2012 Dual Meet |
| 200 Medley Relay | C.St.Cross,D.Feder,N.Stevens,I.Crocker | PTSC | 2:16.10 | 1993 New Englands |
| 200 Freestyle Relay | A.Johnson,L.Pordon,A.Stevens,R.Cochran | SYT | 2:02.50 | 2023 YMCA States |