Mercer used an eight-run fourth inning to slip past Austin Peay 13-12 on Saturday at Claude Smith Field.
Mercer (8-3) evened the series in a game that had the first nine runs come in by way of home run.
Austin Peay led 4-0 after the top of the first and 8-1 after two only for the Bears to take a 9-8 lead in the fourth, thanks in part to five walks.
The Governors then went from down 11-8 to a tie game. Mercer crept ahead in the sixth and added an insurance run in the seventh before Austin Lord finished things on the mound for his second save of the year.
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"It was huge to dig ourselves out of an 8-1 deficit and come up with the win against a good club," Mercer head coach Craig Gibson said. "It was a team effort. Our hitters came through for us with some moments at the plate and defensively we didn't make any mistakes.
"The pitching was shaky early on, but some other guys got a chance to show what they could do and Austin Lord was great late in the game."
Matt Meeder had three hits and Jackson Ware two for the Bears.
On Friday, Mercer scored six runs in the final two innings, but it wasn't enough in a 10-7 loss.
The series concludes at 1 p.m. Sunday.
Mercer softball wins two
Mercer picked up two softball wins on Saturday, beating Fordham 6-0 and Iowa State 5-0 on the second day of the Black & Orange Challenge.
Three players went deep to lead Mercer past Fordham. A two-run home run by Quirisa Mauga, her first of the season, gave Mercer an early 2-0 lead after one inning.
Mercer again used an early lead to separate itself and eventually defeat Iowa State for the second time in as many days. By the third inning, the Bears led 4-0, largely in part to a three-run inside-the-park home run by Meghan Rud in the second inning.
Friday, Mercer team split its two games on the first day, beating Iowa State 9-3 and losing 8-3 to Boston College.
Mercer will face Boston College at 2:15 p.m. on Sunday in the championship game.