The San Bernardino, Calif., native was 18-of-31 (.581) from the field and 10-of-20 (.500) from 3-point range in two games, becoming the 12th player in CU history to make seven 3-pointers in a contest when he did so versus Tech. Roby also totaled six rebounds and five steals.
He leads the team in scoring with 15.6 points per game.
Roby also won the honor Dec. 27. He is just the second player in school history to be named Phillips 66 Big 12 Conference Rookie of the Week twice. D.J. Harrison earned a pair of honors during the 2000-01 season.
The Buffs, 11-9 overall and 3-6 in conference, host Texas Tuesday at 7 p.m.