Rangers outfielder Josh Hamilton left Friday's game against the Angels in the seventh inning with a flare-up of right knee tendinitis.
Hamilton said he'll come in for treatment on Saturday and see if the trainers feel like he can get a cortisone shot in the knee.
"It was hurting before everything started [Friday], the batting practice and everything," Hamilton said.
"The pain part doesn't bother me, it's the giving out on me. I don't want to be out there, especially in center field, an important spot in the field, and if I can't go get a ball, we need to put somebody out there who can."
Josh Hamilton Leaves With Knee Tendinitis