Trimble had conditioned his entry into the NBA draft this year on a team guaranteeing to take him in the first round, according to 247Sports.
The freshman averaged a team-best 16.2 points as well as 3.9 rebounds and three assists in a season in which he earned first-team All-Big Ten honors and helped Maryland to its first NCAA tournament appearance since the 2009-2010 season.
"We did our due diligence and also had a number of great discussions with Melo and his mom regarding what would be best for his future," Terps coach Mark Turgeon said. "He is excited about playing with a great team and is looking forward to his sophomore year at Maryland."
The Terrapins earned a No. 4 seed in the NCAA tournament. They defeated Valparaiso in their first game, but lost to West Virginia in the round of 32. Trimble sustained a concussion in the team's loss to the Mountaineers.
Maryland finished the season 28–7 overall and 14–4 in the Big Ten.
- Christopher Woody