| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Marcus "Mark"•Senior |
| Used name | Mark•Senior |
| Born | 13 December 1963 |
| Measurements | 170 cm / 67 kg |
| NOC | Jamaica |
Mark Senior won bronze with the 4×400 metres relay team (with Winthrop Graham, Devon Morris, and the non-Olympian Berris Long) at the 1987 Pan American Games.
Personal Best: 400 – 45.59 (1986).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1984 Summer Olympics | Athletics | JAM |
Mark Senior | |||
| 400 metres, Men (Olympic) | 6 h4 r2/4 | |||||
| 4 × 400 metres Relay, Men (Olympic) | Jamaica | 6 h2 r2/3 |