Warney (6-8, 260) was signed as a free agent on July 27, 2016 and played in three preseason games last year for the Mavericks averaging 4.0 points and 2.7 rebounds in 9.2 minutes per contest. He was waived on October 16, 2016. He played for the Texas Legends of the G League in 2016-17 and averaged 17.3 points, 8.0 rebounds, 1.4 assists, 1.2 blocks and 29.2 minutes in 44 games (34 starts).
Warney went undrafted in the 2016 NBA Draft after four successful seasons at Stony Brook University where he averaged 15.8 points, 9.4 rebounds, 1.6 assists, 2.