The Bulldogs quickly got the run back in the top of the second, as the Crimson had the infield pulled in with the bases loaded. Yale blooped a single to left, and plated its first run of the series.
At that point, freshman hurler Kara Brotemarkle came in to spell Whitton. She pitched 5 2/3 innings without allowing another run.
When pitcher Jillian Miles threw a wild pitch in the bottom of the inning to allow freshman shortstop Rachel Goldberg to score, the Crimson had as many runs as it would need to put the Bulldogs away.
Harvard added a run in the fourth on a Cooley single, and two in the fifth. Sophomore tri-captain Grace Bloodwell singled in two in that frame to round out Harvard's scoring.
The Crimson plays for its Ivy lives this Saturday, requiring a sweep to force the playoff with the Big Red.
"I think we've finally reached the point where everything is clicking, Thoke said. "We have a chance at winning the league after losing three games at the beginning. We're excited to show what we can do now that we are playing so well together."