Chock will also contribute with her speed in the butterfly events and her consistent wins in the 200 freestyle.

Joining Chock in the relays will be the runner-up in the 100-yard butterfly at last year's Ivy championships, sophomore Anna Fraser.

"It's going to be a fast event, but I'm so confident because I swam best unshaved times this season," Fraser said. "I've got nothing to lose."

Fraser has just returned to the water after two months out following shoulder surgery. Junior Janna McDougall will also be a key performer for Harvard.

It is unclear what McDougall will swim because she is extremely versatile and can perform well in any number of events. It is expected she will contest the 50 and 100-yard freestyle and the 200-yard backstroke.

Freshman upstart Erica DeBenedetto may prove to be the Crimson's secret weapon at Princeton.

The senior national-qualifying breaststroker, who has a history of stepping up her form and intimidating the competition at high-pressure events, will be the key player in the Crimson's bid at victory in both medley events. DeBenedetto's personal best times place her at the top of the Ivy standings in the individual breaststroke events.

"The relays are going to be awesome," DeBenedetto said. "It's going to be exciting and I know we'll give our competitors a run for their money."