LMU is also coming off an emotional high after rallying back from a two-goal deficit to beat Arizona 3-2 in double overtime last weekend.
The Crimson should have a relatively easier time against San Diego State (3-8), which finally snapped a six-game losing streak by downing Long Beach State on Sunday.
Despite being outscored by its opponents so far this season, the Aztecs have, for the most part, matched their competition shot-for-shot. In fact, San Diego State actually outshot Pepperdine 12-11 in a losing effort yesterday.
Midfielder Fay deLeon is the Aztecs' biggest scoring threat, holding the team lead in both goals and assists.
Sunday's tilt with San Diego State will provide Harvard with a final tune-up before it returns home next Wednesday to face Boston College in a rematch of last year's NCAA tournament showdown.