Eddie Sefko of the Dallas Morning News reports: The Dallas Mavericks have a showdown with the San Antonio Spurs tonight but Mavericks coach Don Nelson doesn't think Michael Finley, who hasn't missed a game this season, will be available.

Yesterday, Finley had an MRI on the left hamstring that he injured late in the first half against Cleveland on Tuesday.

While the results haven't come back yet, Don Nelson isn't optimistic that Finley will play tonight.

"We're not optimistic," coach Don Nelson said. "But we'll wait to see what the report says."

Finley will be a game-time decision.