Four different Harvard pitchers held UMass, the Yankee Conference leader, to a total of four hits yesterday as the Crimson blanked the Redmen, 2-0, in an uproarious contest which saw the UMass bench ejected from the game in the sixth inning.

Harvard was ahead 1-0 in the bottom of the fifth when the Crimson's Roz Brayton coaxed a walk. After Vince McGugan forced Brayton. Dave Ignacio drew another walk to put McGugan in scoring position. One out later. Pete Varney lashed a liner down the third base line, and the fun began.

The ball might have been foul by inches, but the plate umpire signaled fair. Three UMass infielders began jumping and screaming as McGugan scored. They kept it up as Varney lumbered toward second base. The UMass second baseman recovered to take the throw in and appeared to tag Varney out by three feet. The second-base umpire called Varney safe and the UMass bench erupted.

The Redmen coach. Dick Bergquist, walked out in disbelief. Confronting the second-base umpire, he said. "You've got to be blind." He turned and stalked back to the dugout.

The bench then took over for the coach. The steady drone of curses and epithets lasted five minutes until the umpire had heard enough. He stopped the game and banished everyone not playing, coaches and managers included. The substitutes spent the rest of the game watching from the stands.

Harvard took a one-run lead in the first when McGugan and Ignacio walked and pulled a double steal to put men on second and third. Pete Bernhard then lifted a sacrifice fly to score McGugan.

That was all the Crimson needed as J. C. Nickens. Roz Brayton, Sandy Welssent, and Barry Malinowski each took turns toying with the UMass batters. The Redmen failed to mount anything resembling a scoring threat all day.

Malinowski came on in the ninth with UMass screaming for blood. He calmly struck out the last two batters to end the game.