Washington Redskins quarterback Robert Griffin III is getting more tests done on his injured right knee because an MRI taken showed inconclusive results. Redskins coach Mike Shanahan said Monday that a previous ACL tear clouded results of the test and that Griffin will visit Dr. James Andrews on Tuesday. Griffin tore his ACL at Baylor in 2009. He sprained the knee during a game on Dec. 9 and missed one game. He returned Dec. 23 and has worn a brace over the game since then. Griffin reinjured the knee twice during Sunday's NFC wild-card playoff loss to the Seattle Seahawks. He was reinjured in the first quarter, but he remained in the game until he was hurt again with 6:19 remaining. Griffin's exit came in the wake of a USA Today report that Andrews, who is on retainer with the Redskins, had not cleared Griffin to re-enter the Dec. 9 game when he was initially injured.