LSU football didn’t come to Las Vegas this weekend to have fun and maybe lose some money at the Bellagio.

According to Will Campbell, the Tigers are heading to Sin City for a game.

“We know what we’re there for. We’re not there to go to Caesars Palace,” Campbell said. “And everyone in this building knows that.”

LSU opens its season against USC on Sunday at Allegiant Stadium in Las Vegas. The game marks the start of coach Brian Kelly’s third season as manager as the Tigers attempt to snap a four-game losing streak in home openers.

It will be only the third time that LSU and USC have faced off on the court. The last showdown came in 1984, when the Tigers defeated the Trojans 23-3 at the Coliseum. But USC won the first game between the two teams at Tiger Stadium in 1979, rallying from a 12-3 deficit in the fourth quarter to win 17-12.

Here are live score updates from LSU’s awesome season opener against the Trojans.

END: USC 27, LSU 20

The Trojans trailed 17-13 but went on a 14-3 run in the fourth quarter to hand LSU its fifth straight opening-week loss.

Fourth quarter

Nussmeier is intercepted on his first throw of the drive. USC takes over with four seconds left.

RESULT: Marks scores a touchdown on a run up the middle. After the extra point, USC leads 27-20 with eight seconds left.

Gilbert’s decision is upheld, meaning he is ejected from the match.

Moss hits Hudson for a 20-yard completion for a first down. Jardin Gilbert is then called for targeting on the tackle. The play is reviewed.

USC approaches field goal range with 22 seconds left. Trojans have the ball on the 42-yard line.

Unable to convert a third-and-8, LSU had to settle for a 31-yard field goal, but Ramos tied the score at 20 with 1:47 to play.

Nussmeier completes another pass to Thomas. The catch goes 12 yards, putting LSU on the USC 16-yard line.

Nussmeier hits Anderson for a 41-yard completion. Tigers are now inside the USC 30-yard line.

RESULT: Moss connects with Ja’Kobi Lane for a 28-yard touchdown pass. Trojans regain lead, 20-17 with 5:44 to play.

Emery is stopped on third-and-1 to force a three-and-out. USC gets the ball back with 6:57 to play.

The Tigers lead 17-13 with 8:38 to play.

LSU forces a turnover on downs after Jones deflects Moss’ pass in the air. Weeks nearly intercepts the pass. Tigers have the ball on their own 21-yard line after an unsportsmanlike conduct call against Major Burns.

On third-and-six, Whit Weeks makes a tackle for loss on a USC run to the right side. The Trojans go for it on fourth-and-9 at the LSU 36-yard line.

Correction: Womack is not injured and can play again.

Nussmeier’s throw to Josh Williams is completed, but Williams is tackled just in front of the sticks, forcing LSU to punt the ball away. Todd punts the ball away to the USC 15-yard line.

Third quarter

Emery catches a pass and carries the ball for a combined 16 yards on back-to-back plays before the end of the third quarter. LSU has the ball on its own 39-yard line.

A fumble and a penalty push USC back into their own end zone, forcing the Trojans to punt the ball just before the start of the fourth quarter.

Injury update: Da’Shawn Womack is wearing street clothes and has an injury to his left knee.

Injury update: Moss injured his throwing hand on USC’s previous drive, but was allowed to start the Trojans’ next drive after LSU’s touchdown.

RESULT: Nussmeier connects with Aaron Anderson for a 13-yard completion and a touchdown. Tigers take a 17-13 lead with 3:42 left in the third quarter after the extra point.

The Tigers find themselves in the red zone after another productive run from Emery for 10 yards.

John Emery runs 39 yards up the middle to the USC 29-yard line.

LSU’s second drive of the half begins at its own 22-yard line.

RESULT: Sai’vion Jones sacks Moss to force USC into a field goal attempt. This time, Lantz shoots the 35-yard field goal to give the Trojans a 13-10 lead.

USC grabs a third and long after a pass interference is called on PJ Woodland. Trojans are in the red zone.

The Trojans are past midfield after Moss hits Kyle Ford on third-and-10 for a gain of 41 yards.

USC responds by forcing a three-and-out. Peyton Todd comes in to kick the ball away to Branch, who is almost immediately tackled at the USC 23-yard line.

LSU forces USC to a three-and-out after a pack of Tigers foils a Trojan screen pass on third-and-2. Thomas returns the ensuing punt 13 yards to the LSU 28-yard line.

Second quarter

USC quickly reached the LSU 12-yard line with two seconds left in the half, and got within range of a field goal for kicker Michael Lantz. But Lantz missed the 29-yard kick, keeping the score tied at halftime.

RESULT: USC stops LSU on a third-and-10 at the Trojan 28-yard line. Damian Ramos steps in to kick a 45-yard field goal that he makes, tying the score at 10 with 1:08 left in the first half.

The Tigers offense is back in business, standing at the Trojans 32-yard line at the two-minute timeout. Nussmeier has completed two more throws to Lacy and one pass to Taylor on the drive.

LSU starts its next drive at the 25-yard line.

RESULT: Ashton Stamps breaks up a pass in the end zone on third and goal at the LSU 5-yard line to force the Trojans into a field goal attempt. USC retakes the lead 10-7 after the short field goal with 4:21 remaining in the first half.

There is no targeted management on the field.

USC is back at the 20-yard line after a blind side block penalty is called on wide receiver Jay Fair. The play is reviewed for targeting.

It’s the first goal for the Trojans, right after quarterback Miller Moss hits wide receiver Duce Robinson for a 38-yard pass.

USC wide receiver Zachariah Branch returns kicker Aeron Burrell’s kickoff all the way to the LSU 43-yard line. Burrell made the tackle, preventing the potential touchdown. His kick was from the 20-yard line instead of the 35 because of an unsportsmanlike penalty Lacy was called after his touchdown catch.

Injury update: Parker is dealing with a shoulder injury, according to ESPN’s broadcast. He has not returned to the game since being injured in the first quarter, but he is back out of the locker room.

RESULT: Nussmeier hits Kyren Lacy in the back of the end zone for a touchdown. The extra point is good, tying the score at seven with 7:04 left in the first half.

The Tigers are back past midfield. Nussmeier’s latest completion to C.J. Daniels brings LSU to the 33-yard line.

LSU starts its third drive at its own 2-yard line.

RESULT: USC takes its first lead of the game on a two-yard run from running back Woody Marks. The extra point is good, making it 7-0 Trojans with 11 minutes left in the first half.

It’s USC’s first goal after Sage Ryan is charged with pass interference in the end zone.

The previous play still stands up to closer inspection.

USC finds itself on the LSU 41-yard line after converting a third-and-1 with a two-yard run up the middle. Trojans wideout Kyron Hudson then makes a stunning 24-yard catch that puts USC in the red zone. The catch is still under review.

Louisiana Tech transfer Blake Ochsendorf takes the first punt of the night for LSU. Kelly said this week that he and Peyton Todd would both see action at punter against the Trojans.

The Tigers take a fourth-and-2 to the USC 36-yard line. Garrett Nussmeier completes his fourth pass of the drive to Kyren Lacy for the three-yard reception.

LSU returns the opening kickoff. Tigers begin their first possession at the 23-yard line.

Pre-match updates

16:54 hrs: Chris Hilton is not dressed for pregame warmups. The junior wide receiver has been questionable all week with an ankle injury. Kyle Parker is expected to start in his place.