Brooks Koepka caught fire Thursday morning at Bethpage Black, firing a course-record 63 on his way to taking a strong hold of the 18-hole lead at the 101st PGA Championship. The defending champion was easily the star of his featured pairing with fellow major winners Tiger Woods and Francesco Molinari, besting both golfers by nine strokes in their opening round. In fact, Woods and Molinari are actually flirting with the cut line on Friday, which is the exact opposite of their showing at the 2019 Masters just one month ago when they were contending for the first major championship of the year.

But Koepka's lead is already being tested Friday now that Jordan Spieth and Dustin Johnson have gone out and shot quality numbers in their Round 2 efforts. For Koepka, he now has to defend his lead, while for Woods and Molinari, it will be about ensuring they are in position to make the weekend and begin the climb towards whatever number Koepka has posted at day's end. Though Koepka has a strong lead, it is not insurmountable, though it may take him falling off a bit for those entering Round 2 at 1 under or worse to catch up to his advantage.

2019 PGA Championship tee times, pairings for Friday

All times Eastern

No. 1

6:45 a.m. -- Ryan Vermeer, Adrian Otaegui, Jason Kokrak
6:56 a.m. -- Alex Björk, Rod Perry, Ross Fisher
7:07 a.m. -- Eddie Pepperell, Branden Grace, Ryan Palmer
7:18 a.m. -- Ryan Moore, Joel Dahmen, Thorbjørn Olesen
7:29 a.m. -- Y.E. Yang, Rich Beem, John Daly
7:40 a.m. -- Steve Stricker, Brian Harman, Patrick Cantlay
7:51 a.m. -- Sung Kang, Shaun Micheel, Alex Beach
8:02 a.m. -- C.T. Pan, Kevin Na, Ryan Armour
8:13 a.m. -- Danny Willett, Webb Simpson, Zach Johnson
8:24 a.m. -- Kevin Tway, Brandon Stone, Bronson Burgoon
8:35 a.m. -- Si Woo Kim, Danny Balin, Tom Lewis
8:46 a.m. -- Jazz Janewattananond, Tyler Hall, Michael Kim
8:57 a.m. --  Mikko Korhonen, Craig Hocknull, Jhonattan Vegas
12:10 p.m. -- Ben Cook, Scott Piercy, Brian Gay
12:21 p.m. -- Thomas Pieters, Patton Kizzire, Adam Hadwin
12:32 p.m. -- Brandt Snedeker, Kiradech Aphibarnrat, Max Homa
12:43 p.m. -- Henrik Stenson, David Lipsky, Richard Sterne
12:54 p.m. -- Shane Lowry, Erik Van Rooyen, Tommy Fleetwood
1:05 p.m. -- Sergio Garcia, Kelly Kraft, Adam Scott
1:16 p.m. -- Charley Hoffman, Louis Oosthuizen, Patrick Reed
1:27 p.m. -- Rickie Fowler, Bubba Watson, Justin Rose
1:38 p.m. -- Xander Schauffele, Hideki Matsuyama, Alex Noren
1:49 p.m. -- Brooks Koepka, Francesco Molinari, Tiger Woods
2:00 p.m. -- Aaron Wise, Ryan Fox, Shugo Imahira
2:11 p.m. -- Julian Suri, Marty Jertson, Martin Trainer
2:22 p.m. --  Lucas Herbert, Cory Schneider, Sungjae Im

No. 10

6:45 a.m. -- Michael Thompson, Danny Lee, Justin Bertsch
6:56 a.m. -- Cameron Champ, Rich Berberian, Jr., Lucas Glover
7:07 a.m. -- Emiliano Grillo, Daniel Berger, Paul Casey
7:18 a.m. -- Tony Finau, Billy Horschel, Ian Poulter
7:29 a.m. -- Matt Fitzpatrick, Rafa Cabrera Bello, Gary Woodland
7:40 a.m. -- Padraig Harrington, Martin Kaymer, Keegan Bradley
7:51 a.m. -- Jon Rahm, Dustin Johnson, Jordan Spieth
8:02 a.m.. -- Pat Perez, Kevin Kisner, Bryson DeChambeau
8:13 a.m. -- Rory McIlroy, Phil Mickelson, Jason Day
8:24 a.m. -- Satoshi Kodaira, Matt Kuchar, Cameron Smith
8:35 a.m. -- Corey Conners, Jim Furyk, Marc Leishman
8:46 a.m. -- Jorge Campillo, Stuart Deane, Chesson Hadley
8:57 a.m. -- Dylan Frittelli, Andrew Filbert, Kurt Kitayama
12:10 p.m. -- Rob Labritz, Beau Hossler, J.J. Spaun
12:21 p.m. -- Sam Burns, Jeffrey Schmid, Keith Mitchell
12:43 p.m. -- Ben An, Jason Caron, Andrew Putnam
12:43 p.m. -- John O'Learn, Harold Varner III, Kyle Stanley
12:54 p.m. -- Mike Lorenzo-Vera, Justin Harding, Sam Ryder
1:05 p.m. -- Vijay Singh, Jason Dufner, Jimmy Walker
1:16 p.m. -- Graeme McDowell, Chez Reavie, Brendan Jones
1:27 p.m. -- Tyrrell Hatton, Russell Knox, Haotong Li
1:38 p.m. -- Lee Westwood, Shaun Norris, Charles Howell III
1:49 p.m. -- J.B. Holmes, Lucas Bjerregaard, Troy Merritt
2:00 p.m. -- Joost Luiten, Brian Mackey, Matt Wallace
2:11 p.m. -- Casey Russell, Luke List, Abraham Ancer
2:22 p.m. -- Craig Bowden, Adam Long, Joaquin Niemann