Penn captain Ilana Sinskin felt "fantastic."
She and her fellow female fencers upset No. 4 Penn State, 15-12.
The Quakers have lost to the Nittany Lions the last two years.
"Penn State is the toughest team we've faced . I thought we were going to have a shot but I had no idea we were going to win," said Sinkin of the team's triumph over the perennial powerhouse and the defending national champions.
After the match, Quakers head coach Dave Micahnik's eyes welled with tears out of pride for his team's performance.
Later, a more subdued Micahnik noted Penn State's lineup is "down a little bit this year; they're missing some of their best fencers who are competing on the International circuit trying to make the Olympics."
But Sinkin was quick to credit the team's "incredible" training and not the weakness of Penn State.
Nevertheless, Penn's victory over the Nittany Lions inspired a sense of "relief" and excitement among the Quakers.
They carried that energy through the rest of the day as they easily defeated both Cleveland State by a score of 25-2 and Haverford, 20-7, on their way to a flawless 3-0 showing.
Those three victories extend the Quakers' winning streak to eight. Their only loss of the season came two weeks ago in a close match against Northwestern.
Notable performances included that of sabre fencer Danielle Kamis and foil competitor Sinkin, both of whom went undefeated despite facing opponents to whom they had previously lost.
The men's team fought valiantly against the No. 1-ranked Nittany Lions, but in the end fell 19-8.
They also had a pair of 22-5 wins over both Haverford and Cleveland State bringing their record to 2-1 on the day.
"I was impressed with the way our team was able to cope with the injuries and illness," said men's captain Ron Berkowsky, who withdrew from competition after rolling his ankle during his third and final match against Penn State.
The Quakers were missing four starters Saturday. His y younger brother, Jon Berkowsky, was out with a knee injury incurred in competition last weekend, while both Ben Wieder and Alex Salsman were sick. Jacob Wischnia was in Switzerland competing for the Junior World Cup.
"It was a progressive step in preparing for the Ivies," sophomore Andrew Bielen said.
Bielen suffered his sole loss on the day to standout and German National Team member Franz Bogilez by a narrow 5-4 margin.
"Everyone looked good and the team should be healthy and ready for the Ivy League next weekend," the elder Berkowsky said.
