Before the 2003 season, Major League Soccer held supplemental drafts, in which players who had signed with the league after the 2003 MLS SuperDraft were made available for selection.
{| class="wikitable"
| bgcolor="#FBCEB1" width="5%"|*
| Denotes player who has been selected for an MLS Best XI team
|-
|}
February 28, 2003 Supplemental Draft
{| class="wikitable sortable" style="width: 80%"
|-
!style="background:#A8BDEC;" width=6%| Pick # !!width=25% style="background:#A8BDEC;"| Drafting Team !!width=15% style="background:#A8BDEC;"| Player !!width=8% style="background:#A8BDEC;"| Pos !!width=25% style="background:#A8BDEC;"| Former Team
|-
! 1
| San Jose Earthquakes
