NO. 1 LSU VS. NO. 4 OKLAHOMA

■ Records: LSU 13-0, Oklahoma 12-1

■ Site: Mercedes-Benz Stadium, Atlanta

■ Kickoff/TV: Today, 4 p.m., ESPN

■ Line: LSU by 131/2

■ At stake: The Tigers are playing in their first playoff semifinal. They will try to keep their high scoring going, even if they are without All-SEC running back Clyde EdwardsHelaire, who has an injured hamstring. The Tigers lead the nation in total offense while ranking second in passing and third in scoring. Heisman Trophy winner Joe Burrow has two 1,000yard receivers, including Biletnikoff Award winner Ja’Marr Chase. The Sooners are looking to end an 0-3 drought in playoff semifinal games, including losses to two other SEC powers, Alabama and Georgia, the last two years.

■ Key matchup: Burrow has thrived while making winning decisions on runpass-option plays in LSU’s spread offense. He’ll be tested by the speed and big-play skills of Oklahoma middle linebacker Kenneth Murray, who is a key to the Sooners’ improvement on defense in 2019. Murray has 16 tackles for losses and four sacks.

■ Facts and figures: The game matches the nation’s top two offenses. LSU averages 555.4 yards, only slightly ahead of Oklahoma’s 555.2 . ... This is the second straight year Oklahoma has played the No. 1 team in the semifinal, after losing to Alabama 45-34 last year . ... Oklahoma QB Jalen Hurts will become the first quarterback to have started a CFP game for two schools. ... Burrow set SEC records for yards passing (4,715) and TD passes (48). His TD passes led the nation . ... LSU is 13-0 for the first time since 2011, when it lost to Alabama in the BCS national championship game.