EAST LANSING, Mich. (AP) -- Michigan State coach Tom Izzo says he doesn't know if injured point guard Kalin Lucas will be ready to play Tuesday against Purdue in a key Big Ten game.

No. 10 Michigan State (19-5, 9-2) has a one-game lead in the conference over Wisconsin, Ohio State and Illinois. No. 6 Purdue (19-3, 7-3) is close behind.

Izzo said Monday there's a chance Lucas will play against the visiting Boilermakers. But Izzo isn't sure how effective Lucas would be because a sprained ankle continues to bother the speed-oriented guard.

The Spartans have lost back-to-back games at Wisconsin and Illinois after starting the Big Ten season with nine straight wins.

Lucas was injured against Wisconsin and missed the Illinois game. He leads the team in scoring at nearly 16 points per game.

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