USC senior outside linebacker Porter Gustin was carted off the field with a knee injury during Tuesday’s practice. He is expected to undergo an MRI to determine the severity, coach Clay Helton said, adding that the exam is “extremely precautionary.”
“The knee seems stable from what the doctors said,” Helton said. “But let me wait to see the MRI before I start guessing on what it is.
“He was not in a lot of pain; not at all. It felt funny to him. If anything is off with Porter, anytime you have that fine of an athlete and something feels a little funny, obviously you want to know what it is.