The 1999 Major League Soccersupplemental draft took place in Fort Lauderdale on the afternoon of Sunday, February 7. The second and third rounds of the 1999 MLS College Draft had taken place earlier that morning. In this supplemental draft, a number of teams passed in the second and third rounds. Consequently in 2000, MLS merged the college and supplemental draft into the 2000 MLS SuperDraft.
^#1: New England Revolution → Los Angeles Galaxy. 5 January 1999: Los Angeles Galaxy acquired this first-round selection and a second-round selection in the 1999 MLS College Draft from New England Revolution in exchange for defender Dan Calichman.[ref 1]
^#4: Tampa Bay Mutiny → D.C. United → MetroStars. 7 February 1999: MetroStars acquired this first-round pick from D.C. United in exchange for a first-round selection in the 2000 Supplemental Draft. The 2000 draft pick was converted to a fourth-round selection in the 2000 MLS SuperDraft when the Supplemental Draft was abolished.[ref 2] On 19 January 1999, D.C. has acquired this first-round pick and a third-round selection (#28) in the 1999 MLS College Draft from Tampa Bay Mutiny in exchange for goalkeeper Scott Garlick.[ref 3]
^#7: MetroStars → Colorado Rapids. 8 March 1998: Colorado Rapids acquired this first-round pick from MetroStars in exchange for forward Steve Rammel.[ref 4]
^#11: D.C. United → San Jose Clash. 28 January 1999: San Jose Clash acquired this first-round pick and a second-round selection in the 1999 MLS College Draft from D.C. United in exchange for financial considerations.[ref 3]
^#19: MetroStars → Miami Fusion. 1 February 1998: Miami Fusion acquired this second-round selection from MetroStars in exchange for a second-round pick (#14) in the 1998 MLS Supplemental Draft.[ref 5]
^#23: D.C. United → Dallas Burn. 18 January 1999: Dallas Burn acquired this second-round selection and a third-round pick (#35) in the 1999 MLS College Draft from D.C. United in exchange for defender Brian Bates.[ref 6]
^#34: Los Angeles Galaxy → Miami Fusion. 1 February 1998: Miami Fusion acquired this third-round selection from Los Angeles Galaxy in exchange for a third-round pick (#26) in the 1998 MLS Supplemental Draft.[ref 5]
4 February 1998: D.C. United traded Raul Diaz Arce and third round pick in 1999 college draft to New England Revolution for first round pick in 1999 supplemental draft, and first round and second round picks in 1999 college draft.[ref 3]