Updated

Boston, MA (SportsNetwork.com) - Speculation that Boston Celtics point guard Rajon Rondo is on the verge of making his season debut increased after the injured All-Star sent out a cryptic tweet on Monday.

"29,233,280 secs," Rondo wrote on his Twitter account, implying the 338-day time frame between his surgery to repair a torn ACL last February and Friday's game between the Celtics and Los Angeles Lakers.

Celtics head coach Brad Stevens told reporters on Tuesday that Rondo will undergo a vigorous workout Wednesday to test his right knee and is a possibility to play in Friday's contest if he comes out of the session OK.

"We've got a day planned, a pretty strenuous day for him, tomorrow," said Stevens. "And then we'll go from there.

"I would think that there's a chance that he will be back for Friday."

Rondo tore his ACL on Jan. 25 of last year in a game at Atlanta and underwent surgery a few weeks later, missing Boston's final 39 games of the 2012-13 regular season as well as the team's loss to the New York Knicks in the Eastern Conference quarterfinals.

The Celtics have gone just 13-26 without the four-time All-Star in the lineup this season, the fourth-worst record in the East.