Mark O'Neill
Defender · USA
Born8 Mar 2002
Season statistics
| Competition | Team | Apps | Goals | Assists | Conceded | Yellow | Red |
|---|---|---|---|---|---|---|---|
 Leagues Cup |  Seattle Sounders | 2 | 0 | 0 | – | 0 | 0 |
Trophies
2× runner-up
Transfer history
Tacoma Defiance → O'Neill MarkFree agent30 Jul 2026
Vancouver Whitecaps → Tacoma DefianceFree agent31 Jan 2026- Vancouver Whitecaps → Seattle SoundersFree agent31 Jan 2026
- Vancouver Whitecaps → O'Neill MarkFree agent30 Dec 2025
- Vancouver Whitecaps → Tacoma DefianceFree agent30 Dec 2025
- Creighton University → Vancouver WhitecapsFree agent12 Jan 2025
About
Mark O'Neill is 24 years old (born 8 March 2002) and plays for Seattle Sounders, wearing the number 40 shirt.
Seattle Sounders play their next match on 18 October 2026 against CF Montreal in Major League Soccer.
ScoreInPlay tracks Mark O'Neill's appearances, goals, assists and cards across every competition he plays in this season.