| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2005 | Major League Soccer (United States) | 30 | 2446 | 3 | 0 | 0.11 | — |
| 2006 | Major League Soccer (United States) | 28 | 2053 | 3 | 0 | 0.13 | — |
| 2007 | Major League Soccer (United States) | 14 | 821 | 0 | 0 | 0 | — |
| 2008 | Major League Soccer (United States) | 33 | 2486 | 2 | 0 | 0.07 | — |
| 2009 | Major League Soccer (United States) | 22 | — | 1 | — | — | — |
| 2010 | Major League Soccer (United States) | 10 | — | 0 | — | — | — |
| 2011 | Major League Soccer (United States) | 31 | — | 3 | — | — | — |
| 2016 | Major League Soccer (United States) | 6 | — | 0 | — | — | — |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-09-04
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Chicago Fire | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 SJ Earthquakes | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Sporting KC | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Portland Timbers | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
 Pachuca | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Heredia | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Across the 2016 Major League Soccer (United States), Justin Mapp totalled 6 appearances.
His league career on record ran from 2005 to 2016: 8 seasons across 3 clubs.
In 4 of the 8 campaigns on record he played at least 25 league games. The densest run of the record is 2006–2008, with 75 league games — an average of 25 per season.
