Isaiah Thomas tweeted that he worked out with Floyd Mayweather on Tuesday.
Isaiah Thomas (wrist) recently dropped 50 points at the Seattle Pro-Am event.
Brad Stevens said on Thursday that Isaiah Thomas "may end up starting" next season.
Isaiah Thomas' recent hand and wrist surgery will have "no long-term ill effects," according to coach Brad Stevens.
Isaiah Thomas said on Saturday that he had surgery on his left hand four weeks ago in order to remove a cyst, and he is expected to be out 2-4 more weeks.
Isaiah Thomas said that he felt like a part of the Celtics future because GM Danny Ainge has asked for his input on free agency.
Celtics president Danny Ainge said he thinks Isaiah Thomas is better-suited to coming off the bench.
Isaiah Thomas shot just 4-of-17 from the field during Sunday's Game 4 loss to the Cavs, scoring 21 points with nine assists, five rebounds, one 3-pointer, on steal and four turnovers through 37 minutes of action.
Isaiah Thomas played just 21 minutes against the Cavs on Thursday during a Game 3 loss, making 2-of-9 from the field for five points with one rebound, two assists and one turnover.
Isaiah Thomas was terrific during Game 2 on Tuesday with a team-high 22 points, seven assists and one steal in a tough 91-99 road loss.
Isaiah Thomas finished Sunday's Game 1 loss to the Cavaliers with a team-high 22 points, two 3-pointers, five rebounds, 10 assists and one steal in 32 minutes off the bench.
Isaiah Thomas will rest vs. the Bucks on Wednesday.
Isaiah Thomas led Boston's reserves on Tuesday with 11 points on 4-of-13 shooting, three 3-pointers, one rebound and six assists in 27 minutes.
Isaiah Thomas looked fantastic during Sunday's blowout win over the Cavs, as he scored 17 points on 5-of-10 shooting (5-of-6 from the stripe), with six assists, two steals, two rebounds, two 3-pointers and one turnover through 22 minutes of action.