PROVO, Utah — BYU freshman quarterback Taysom Hill will have surgery on his left knee and miss the rest of the season with a lateral collateral injury suffered on his final carry in Friday night’s 6-3 win over Utah State.

    Coach Bronco Mendenhall announced the injury after practice Monday as the team geared up to play No. 10 Oregon State, which will be without starting QB Sean Mannion because of knee surgery.

    BYU senior Riley Nelson says he is ready, pain-free and will start against the Beavers after missing two games with what he said were “back fractures.”

    Hill passed for 425 yards this season and rushed for 336, with 8 TDs. His injury occurred on a 4-yard run — even though coaches were trying to get him to take a knee.

    Mendenhall said the coaching staff was trying to communicate with Hill to get in “victory formation,” but the signal was interpreted as something different.