Dennis averaged 2.3 points in 40 career games as a reserve guard.
"We ask that Baylor Nation keeps Nolan in their thoughts and prayers," Drew said. "He was truly a treasured member of our basketball program and we wish him the best."
Dennis averaged 21.4 points and 10.1 rebounds as a senior at Richland High in North Richland, Texas. Dennis was the state's No. 1-rated player by TexasRoundball.com.