Stephen Morris was Miami's starting quarterback for the Hurricanes' game with No. 12 Florida State on Saturday night.
Morris sprained his left ankle last week in Miami's loss to North Carolina, and was listed as doubtful on the team's injury report as recently as Thursday.
The Hurricanes announced the decision to have Morris start over Ryan Williams with about 10 minutes remaining until kickoff against the Seminoles. Earlier in the week, Miami coach Al Golden said Morris would only start if the coaching staff deemed he was completely ready to play.
Morris arrived at the stadium about two hours before kickoff with a walking boot protecting his ankle. He went through two warm-ups on the field, with Golden and offensive coordinator Jedd Fisch seeming to keep watchful eyes on much of his work.
"He just felt progressively better as the week went on," Golden told ABC in a televised interview just before kickoff.
Golden also said Williams was ready if needed.
Morris entered the game having thrown for 1,991 yards this season, including a school- and Atlantic Coast Conference-record 566 yards against North Carolina State.
FSU loses Thompson with knee injury
Florida State lost leading rusher Chris Thompson to a left knee injury in the second quarter Saturday night.
Thompson was injured with 12:44 left in the period, on a play where he made a 32-yard reception. He remained down on the turf after the tackle, then was helped to the sideline for evaluation.
The Seminoles said he would not return.
Thompson missed much of last season with two broken vertebrae, and he feared that back injury would end his career.
He had 47 yards on seven carries Saturday night, giving him a team-best 687 yards for the season. He also has 248 receiving yards, including 47 more in the Miami game before getting hurt.
Fan runs onto field during play
A fan ran onto the field during play in the first quarter.
Florida State was running a play when the male fan, dressed in a T-shirt and shorts, darted from the Seminoles' sideline and onto the field, waving his arms and gesturing.
Game officials conferred and decided to let the play stand. It had resulted in a Florida State first down.
The man continued running after the play and was eventually tackled in the back of an end zone, about 70 yards from where he entered the field. He was escorted off the field by police officers and security personnel.
The Associated Press