It was a good night for the St. Louis Billikens, who defeated Massachusetts 74-to-71 in the quarterfinals of the Atlantic 10 tournament in Atlantic City, New Jersey. Tommie Liddell scored 24 for the Billikens. St. Louis plays George Washington in the semifinals tonight. St. Louis improved its record to 20-and-12. Two more wins and SLU gains a berth in the NCAA Tournament.