South Florida quarterback Quinton Flowers (9) scrambles looking for a receiver as he is pressured by Central Florida linebacker Titus Davis, right, during the first half of an NCAA college football game, Friday, Nov. 24, 2017, in Orlando, Fla. (AP Photo/John Raoux)

No. 12 UCF came into Friday's game against South Florida leading the nation in scoring offense, but it was the 19th-ranked Bulls' offense that commanded most of the attention during the first half despite trailing 21-20 at halftime.

Quarterback Quinton Flowers was 13 of 23 for 348 yards with three touchdowns and an interception during the first half. His career high in passing yards is 385, which happened on Nov. 14 against Connecticut. Five of his completions were for 30 yards or more.

It is only the second time UCF has allowed a quarterback to throw for over 300 yards this season. Memphis' Riley Ferguson passed for 321 on Sept. 30.

Flowers also had 35 yards rushing, which gave him 383 total yards in the first half. The Knights' offense had 245 yards.

Tryre McCants had already set a USF single-game receiving record with 6 minutes remaining in the first half. The junior had 210 yards on six receptions, including a 55-yard touchdown. The previous record was 191 yards by Andre Davis in a 2012 game at Nevada. McCants previous career high was 105 yards against SMU last season.