Harvard's junior varsity football team, seeking its third victory of the season, plays the Boston University junior varsity team here today at 2 p.m.

In its opening games, Harvard edged past Northeastern, 21-14, and Columbia, 13-6.

Harvard will open with an all-sophomore backfield. At quarterback, George Lalich replaces junior Pete Berg, who cracked his collarbone against Tufts and will be sidelined for at least another week.

Lalich suffered from mononucleosis during the freshman season last year and is still of unknown caliber. But varsity backfield coach Pat Stark was impressed with his performance last week against Columbia, as he scored one touchdown and threw another to sophomore halfback Kenny O'Connell. O'Connell caught three straight passes in the last minutes of the first half to hand Harvard its victory.

Sophomore Jim Marshall will fill the other halfback spot, and Joe McKinney