| 1998 MFS Pro Tennis Championships | |
|---|---|
| Date | August 24–30 |
| Edition | 70th |
| Category | World Series |
| Draw | 32S / 16D |
| Prize money | $315,000 |
| Surface | Hard / outdoor |
| Location | Boston, United States |
| Venue | Longwood Cricket Club |
| Champions | |
| Singles | |
 Michael Chang[1] | |
| Doubles | |
 Jacco Eltingh /Paul Haarhuis[2] | |
The1998 MFS Pro Tennis Championships, also known as theU.S. Pro Tennis Championships, was a men'stennis tournament played on outdoorhard courts at theLongwood Cricket Club inBoston, United States that was part of theWorld Series of the1998 ATP Tour. It was the 70th edition of thetournament and was held from August 24 through August 30, 1998.Michael Chang won the singles title.
Michael Chang defeatedPaul Haarhuis, 6–3, 6–4
Jacco Eltingh /Paul Haarhuis defeated
Chris Haggard /Jack Waite, 6–3, 6–2