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Don Petersen, Associated Press
Duke's Chelsea Gray (12) defends Virginia Tech's Alyssa Fenyn (13) during the first half of an NCAA college basketball game Sunday, Jan. 15, 2012, at Cassell Coliseum, in Blacksburg, Va.

BLACKSBURG, Va. — Freshman Elizabeth Williams had 20 points, seven rebounds and four blocks and No. 7 Duke took command with a 22-2 run in the first 10 minutes Sunday to beat Virginia Tech 61-34.

The victory was the 16th in a row in the series for the Blue Devils (14-2, 5-0 Atlantic Coast Conference) and gave coach Joanne McCallie 50 victories in just 61 ACC games, making her the second-fastest to the milestone. Kay Yow of North Carolina State did it in 57 games.

Alyssa Fenyn scored 11 to lead the Hokies (6-12, 2-3), who trailed 24-4 at the midpoint of the first half and never threatened again. Under first-year coach Dennis Wolff, the Hokies played with just six scholarship players, and only five Virginia Tech players scored.