Washington Wizards guard Sheldon Mac will undergo surgery on his torn left Achilles on Tuesday, and as a result, will sit out for at least the next six-to-eight months, according to Shams Charania of Yahoo! Sports’ The Vertical.

Mac suffered the injury during the Wizards’ 102-94 preseason win over the Cleveland Cavaliers on Sunday afternoon. He attempted to put the ball on the floor and drive to the basket in the second quarter, but as he planted his right foot, his left leg could not complete the move and Mac crumpled to the ground as a result.

He was carried off of the court by two trainers.

The 24-year-old Mac, who played his collegiate basketball at the University of Miami, went undrafted in 2016 but was signed by the Wizards as a free agent last September. He ended up impressing Washington in the preseason and making the roster, where he would play in 30 games and make three starts. Mac averaged three points and 1.1 rebounds in 9.6 minutes per game during those outings, making 40 percent of his field-goal attempts, 23.3 percent of his three-point tries and 85.2 percent of his free throws.