SAN ANTONIO (AP) UTSA was nearly felled by the pressure of being overwhelming favorites. The defense prevented a truly upsetting defeat.

Frank Harris passed for 227 yards and two touchdowns and ran for 54 yards and No. 15 UTSA overcame a sluggish performance to beat Southern Mississippi 27-17 on Saturday and remain undefeated.

''We kind of learned a lesson tonight,'' Roadrunners safety Antonio Parks said. ''I think this will help us and give us a boost in momentum the rest of the season.''

UTSA, Georgia and Cincinnati are the only remaining unbeaten FBS teams following No. 8 Oklahoma's 27-14 loss at No. 13 Baylor.

The Roadrunners (10-0, 6-0 in Conference-USA) needed late defensive stands to avoid an upset by the Golden Eagles (1-9, 0-6).

''We made a decision as a football program to milk the clock and try to reduce the game,'' Southern Miss coach Will Hall said. ''We told our kids we will be in the game in the fourth quarter, don't let it catch you off guard and our kids weren't caught off guard. We made one less play or maybe two.''

Favored by 33 1/2-point favorite, according to FanDuel Sportsbook, UTSA nearly became fully ensnared in a trap game if not for its defense.

''That's the only way you win championships,'' Roadrunners coach Jeff Traylor said. ''I've been blessed to win a few. Not once did we ever gone through and look clean on offense every one of those game. Your defense has to get it down and they got it done tonight.''

With the game tied at 17 with six minutes remaining, UTSA noseguard Jaylon Haynes recovered a fumble by Southern Miss quarterback Antavious Willis at the Golden Eagles 35. The turnover led to Hunter Duplessis' go-ahead, 24-yard field goal with 4:39 remaining.

UTSA sealed the victory with 4:25 remaining on a fumble recovery by Charles Wiley at Southern Miss 9 after Corey Mayfield Jr. stripped Willis as he fled the pocket. Sincere McCormick scored on the ensuing play to give the Roadrunners a 27-17 lead.

UTSA had two fumble recoveries and an interception.

McCormick rushed for 90 yards and a touchdown.

Southern Miss entered the game allowing 30.2 points per game but held UTSA to single touchdown for much of the contest. The Golden Eagles had two interceptions, including a 34-yard touchdown return by Natrone Brooks on the second play of the second half to put Southern Miss up 17-10.

Southern Miss started freshman Frank Gore Jr. at quarterback, which caught UTSA off guard defensively. The son and namesake of the New York Jets running back, Gore has started at running back all season and wasn't listed at quarterback on the team's depth chart entering the game.

''It definitely shocked me when they came out and him throwing,'' UTSA junior linebacker Rashad Wisdom said. ''I wasn't ready to see that that early, but the coaches did a great job adjusting throughout the whole game.''

Gore finished with 123 yards rushing and a touchdown on 20 carries and completed 2 of 3 passes for 33 yards before exiting the game in the second half with cramps and a lower leg injury.

A season-high crowd of 30,105 did impact Gore and the Golden Eagles. After his first career completion on a 32-yard pass to the Roadrunners' 2-yard line, the Golden Eagles had a false start, delay of game, bobbled snap and a fumbled snap that pushed them back to the 26-yard line. Missed a 37-yard field goal.

The Golden Eagles finished with 16 penalties for 88 yards, including seven false starts and five delay-of-game penalties.

''The crowd was amazing tonight,'' Wisdom said. ''From everyone who was out there and how loud it got. It really, really was an advantage as far as how many offsides penalties as they got. Being able to bust their communication and kind of taking them off their game.''

THE TAKEAWAY

UTSA: The Roadrunners set up a showdown against UAB for the C-USA West title. UTSA has never defeated UAB in three previous games. The Roadrunners said winning despite the pressure surrounding a national ranking and an undefeated season will help them against the Blazers.

Southern Miss: The Golden Eagles may have found a building block for the future after starting Gore at quarterback. The 5-foot-8 freshman had a 32-yard completion on his first passing attempt and proved difficult to bring down.

UP NEXT

UTSA: Hosts UAB on Nov. 20 for the C-USA West Division title.

Southern Miss: At Louisiana Tech on Nov. 20.

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