The LA Clippers had star forward Blake Griffin take a precautionary MRI after suffering a left knee bruise. Griffin was trying to posterize his teammate Lou Amundson when the injury occured. Per the LA Times and OC Register: “Clippers Coach Doc Rivers said Griffin had ‘tweaked’ his knee. Griffin didn’t practice Thursday and there was no timetable for his return. However, he was dressed in his practice gear and shot free throws flat-footed when the media were allowed in before practice. Griffin was injured while driving for a dunk attempt when he was fouled by Lou Admundson. Griffin fell hard on the court and stayed on his back briefly before getting up to shoot two free throws. The Clippers practice Friday before they leave for an exhibition game in Utah against the Jazz on Saturday night. ‘Blake hurt his knee, but it was nothing bad,’ Rivers said before the team practiced Thursday. ‘But he tweaked it. It was on the dunk attempt. He said he did it going up. So he’s out.’ Griffin’s injury is on the same knee on which he had a non-displaced stress fracture of his left patella that forced him to miss his entire rookie season (2009-10) after he had surgery. [...] Griffin injured his knee on the final play of the scrimmage Wednesday, trying to score a game-tying dunk over Louis Amundson. Griffin was fouled on the play and missed both free throws.”