(Special to the CRIMSON)

PRINCETON, Feb. 19-Never fully extending itself. Harvard's varsity squash team disposed of a solid Princeton squad 9-0 today on the Tiger's Jadwin courts.

Harvard will face Penn tomorrow afternoon in Philadelphia in a match of undefeated teams that will determine the national champion.

The Crimson's lopsided victory today, the first time Princeton has ever been shut out on its home court, gives the raequetmen a psychological advantage over Penn in comparative scores. Penn edged Princeton. 5-4, last month.

Harvard was a clear favorite entering the Princeton match, but the margin of victory was unexpected.

The biggest upset of the day came at number one where sophomore Peter Briggs defeated Sandy McAdoo, third in collegiate ranking, in three straight games.

"I didn't make a mistake," Briggs said. "I kept off the tin and didn't waste a single shot."

Most Harvard players said they were net up for the match and did not play their best games. Still, the Crimson swept four matches and no individual set went beyond four games.

As in the past two years, tomorrow's Harvard-Penn match should be determined at the middle position. "Harvard's strength is clearly in their depth." Penn coach Al Malloy said. "That's the thorn in our claw."

Penn has had a distinct advantage at one and two throughout the season. counting on the two top collegiate players, Palmer Page and Eliot Berry. But Briggs' victory over McAdoo indicates that all nine matches tomorrow will be toss-ups.

Harvard captain Ed Atwood will face Penn captain Jeff Condon at number three for the second consecutive year. Playing in the final match last year, Atwood came from behind to beat Condon and give Harvard a 5-4 victory.

"If we lose tomorrow, we'll have wasted the entire season," Briggs said.