Wizards swingman Sheldon Mac went down with a serious injury. (Jonathan Newton/The Washington Post)

Washington Wizards swingman Sheldon Mac suffered a serious injury to his lower left leg Sunday night in the team’s exhibition game against the Cleveland Cavaliers. The Wizards fear that Mac tore his left Achilles’ tendon, according to a source. He is scheduled to have an MRI on Monday.

In the second quarter, Mac attempted to drive from outside the right arc. As Mac planted his right foot, it appeared as if his left leg could not complete the move. Mac grimaced in pain and then crumpled to the floor. Teammates surrounded Mac before he was carried off the court by two trainers with 4:34 remaining in the quarter.

The Wizards announced Mac would not return to the game. Before his exit, the 25-year-old had played 10 minutes and scored three points.

The injury compounds the Wizards’ preseason pain. Starting power forward Markieff Morris will miss the start of the regular season as he continues to recover from sports hernia surgery. Backup point guard Tim Frazier has not appeared in the three preseason games due to a mild groin strain.

Last year, his lone season in the NBA after going undrafted out of Miami, Mac averaged 3.0 points in 30 games for the Wizards, three of which were starts.

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