NORTH ANDOVER — Merrimack committed 20 turnovers to Pace's eight and that spelled the difference as the visitors rolled to a 77-64 win.
"We need to do a better job of protecting the ball and keeping possession," said Warriors coach Bert Hammel after his club suffered its fourth straight loss.
Dee Mency scored a game-high 22 points while adding eight boards and five assists. Roland Davis contributed 14 points and Tyler Young finished with 10 points.
Merrimack (9-7, 5-5 NE-10) is at Southern Connecticut Tuesday. Pace improved to 10-8 (6-7 NE-10).
The Pace women went on a 17-0 run in the second half and Merrimack couldn't recover in a 65-54 setback.
Tiffany Colon and Kelly Schatzlein each contributed 13 points to the Warriors' cause. Gennifer Roy added 10 points.
The Warriors, who've lost three straight, dropped to 7-9 on the year and 5-7 in the conference. The Setters improved to 15-4 overall and 9-4 in league play.