The 2023 PGA Championship at Oak Hill Country Club begins Thursday after a roughly two-hour frost delay

With a number of star-studded groups due to play the course. While a major title cannot be won or lost in the first round

It may be lost. Rory McIlroy may have thrown himself behind the eight ball on the opening day of the 2023 Masters

But the four-time major champion was out in lead after 18 holes at Southern Hills a season ago.

At 10:01 a.m. ET, he will begin his quest for his fifth major championship with reigning champion Justin Thomas and 2020 PGA Champion Collin Morikawa.

They have eight majors in total and five of the previous 11 PGA Championships. They are closely followed by world number one and Masters champion Jon Rahm.

At 10:23 a.m., the Spaniard begins his quest to become the first player since Jordan Spieth in 2015 to win the first two major championships of the calendar year

With reigning U.S. Open winner Matt Fitzpatrick and winner Golfer of the Year Cameron Smith.

Scottie Scheffler, Brooks Koepka, and Gary Woodland will play at 9:50 a.m., followed by Viktor Hovland, Shane Lowry, and Jordan Spieth at 10:12 a.m.