Porter Gustin said he aggravated an "ankle impingement" he had been playing through since the Washington State game. He explained in detail why he wasn't able to finish the game Saturday night, but he hopes to be ready to go after the bye.
https://usc.rivals.com/news/porter-gustin-explains-ankle-injury-that-forced-him-out-late-in-game
https://usc.rivals.com/news/porter-gustin-explains-ankle-injury-that-forced-him-out-late-in-game
