Ricky Rubio's next milestone is four weeks out, when he can lose the crutches he already has started to hate.

Thinking beyond that is too hard, at least right now. The Timberwolves rookie guard admits he worries whether he'll be the player he was before tearing two ligaments in his left knee. And he made no promises Tuesday about being back in time for training camp this fall.

With his mother in the audience and those crutches leaning against the wall, Rubio talked publicly for the first time since hurting his knee March 9 against the Lakers.

Rubio was engaging but understated. He was candid about both his hopes and his fears. And that includes the nagging doubts that come to everyone who has had major reconstructive knee surgery: