Here are the 1998 home opener dates for the 12 MLS teams, announced today by commissioner Doug Logan. The remainder of the 1998 MLS schedule will be unveiled in January.
| Date | Matchup | Kickoff (ET) |
| Sunday, March 15 | D.C. United at Miami | 4:00 p.m. (ABC) |
| Saturday, March 21 | Columbus at Tampa Bay | 7:00 p.m. |
| Saturday, March 21 | Kansas City at D.C. United | 8:00 p.m. (ESPN2) |
| Saturday, March 21 | Colorado at Dallas | 8:30 p.m. |
| Saturday, March 21 | San Jose at Los Angeles | 10:00 p.m. |
| Saturday, March 28 | Colorado at San Jose | 10:30 p.m. |
| Saturday, April 4 | D.C. United at Columbus | 7:30 p.m. |
| Saturday, April 4 | Tampa Bay at Chicago | 8:00 p.m. |
| Saturday, April 4 | MetroStars at Kansas City | 8:30 p.m. |
| Saturday, April 4 | Los Angeles at Colorado | 9:00 p.m. |
| Saturday, April 11 | Los Angeles at MetroStars | 3:00 p.m. |
| Saturday, April 18 | D.C. United at New England | 3:00 p.m. |