NEW HAVEN, Conn.--Playing on grass for only the second time this season, the No. 19 Harvard field hockey team beat Yale 2-0 on goals from freshman forward Kalen Ingram and junior forward Kate Nagle Saturday afternoon.

Tri-captain Anya Cowan made 12 saves, including four during a flurry of consecutive penalty corners in the second half, to earn her first shutout of the season as the Crimson (5-1, 2-0 Ivy) remained unbeaten in league play.

And in the sibling rivalry department, Harvard sophomore Hilary Walton led a stifling Crimson backfield by blanking her twin sister Amanda, who leads the Ivy in scoring with 20 points on 10 goals.

"This was a good win for us," Harvard Coach Sue Caples said. "We played tough and a little bit scrappy, and we're in a great situation right now. We're getting better every single day."

The Crimson, which dropped a tight 2-1 decision at No. 1 UConn on Wednesday, responded with a well-rounded defensive effort and much-improved second-half play in the midfield to all-but eliminate Yale (3-3, 0-2) from contention for the Ivy title.

The Bulldogs had beaten Harvard twice during the 1998 season, including a 2-1 decision in the first round of the ECAC Tournament, which ended the Crimson's season.

"I'm a freshman, so I'm new to this whole Harvard-Yale rivalry," Ingram said. "But everyone was so pumped up before the game that I'm beginning to understand."

Ingram opened the scoring with 14:41 remaining in the first half when she scored unassisted off a slick piece of stickwork at the top of the circle.

Off a quick restart on the left sideline, tri-captain Dominique Kalil sent a long ball through the midfield for Ingram, who collected it and rolled left-to-right to the circle, where she shook her defender and opened up a shot to her right.