Wizards guard Isaiah Thomas underwent successful surgery Wednesday to repair a ruptured ligament in his left thumb, the team announced.

He is expected to miss 6-8 weeks because of the injury that happened Monday during routine workouts.

“This was an unfortunate setback for Isaiah, but with his resolve and the top care he will receive from our medical team, we expect him to make a full recovery,” Wizards GM Tommy Sheppard said in statement. “In the meantime, he will continue to mentor our young guards and have a positive impact on the team as we start training camp.”

The Wizards signed Thomas as a free agent on July 6. He is penciled in as the No. 2 point guard behind Ish Smith. The Wizards enter camp with Smith, Bradley Beal, Thomas and a host of others, including Justin Robinson, Isaac Bonga, Jordan McRae and Jemerrio Jones, listed at guard.

John Wall, though making progress from a ruptured Achilles, still could miss all of this season.

The thumb injury is the latest setback for Thomas, who has been bothered by hip issues for the past several seasons.

Since he played in 82 games in an All-Star season with the Celtics in 2015-16, he has bounced from Boston to the Cavaliers, Lakers and last season the Nuggets.

Thomas, 30, split time between Cleveland and Los Angeles in 2017-18 season, seeing limited action because of a right hip impingement, yet he still averaged 15.2 points and 4.8 assists in 32 games. He was signed as a free agent by Denver before the 2018-19 season and appeared in 12 games, averaging 8.1 points and 1.9 assists.

The timeline for Thomas' return would push him at least a week into the regular season, if not into November.

The Wizards open camp in less than two weeks, and their regular season tips off Oct. 23.