Mangrum connected with Lenichek only 42 seconds later, saving the Crimson the embarrassment of losing.
Neither the Crimson nor the Quakers will see post-season play this year. Harvard ended the season fifth in the Ivy League, while Penn placed last for the second straight year.
Princeton (11-4-2-, 5-1-1) won the Ivy League outright when it tied Yale (12-4-1, 4-2-1) 0-0 on Saturday in Princeton. It is the Tigers' first Ivy title since 1993, and they earned a bid to the NCAA tournament with Saturday's tie.
Yale, who defeated defending national champion Indiana and powerhouses St. John's and Georgetown this season, should be the Ivy League's other representative in the tournament.