Bryson DeChambeau and Brooks Koepka have been kept apart in the first two rounds of the US Open, which starts at Torrey Pines in California on Thursday.
The Americans have been in a feud, with two-time winner Koepka posting a video on social media to offer free beer to fans ejected from a recent event for heckling defending champion DeChambeau.
Koepka plays with Justin Thomas and Collin Morikawa at 15:29 BST.
DeChambeau starts at 21:14, with Rory McIlroy and Justin Rose out at 21:36.
Northern Ireland’s McIlroy, who won this title in 2011, and 2013 champion Rose will play with world number one Dustin Johnson.
Six-time runner-up Phil Mickelson, who became the oldest major winner at the age of 50 when he won the US PGA Championship in May, starts his latest quest to complete the career Grand Slam at 18:51.
The left hander, who celebrates his 51st birthday on the eve of the tournament, is playing with fellow Americans Xander Schauffele and Max Homa.
Favourite Jon Rahm, who was forced to withdraw from the Memorial Tournament with a six-shot lead after three rounds because of a positive Covid-19 test, also starts on the back nine with former Masters champion Patrick Reed and Australian Marc Leishman.
The 156-player field will be cut to the top 60 players plus ties after two rounds.
Starting on hole one
14:45 Sahith Theegala (US), Edoardo Molinari (Ita), Greyson Sigg (US)
14:56 Chris Baker (US), JJ Spaun (US), Fabian Gomez (Arg)
15:07 Patrick Rodgers (US), Robby Shelton (US), Pierceson Coody (US)*
15:18 Russell Henley (US), Mackenzie Hughes (Can), Harris English (US)
15:29 Francesco Molinari (Ita), Henrik Stenson (Swe), Shane Lowry (Ire)
15:40 Matt Fitzpatrick (Eng), Tyrrell Hatton (Eng), Viktor Hovland (Nor)
15:51 Martin Kaymer (Ger), Webb Simpson (US), Gary Woodland (US)
16:02 Tony Finau (US), Abraham Ancer (Mex), Daniel Berger (US)
16:13 Si Woo Kim (Kor), Kevin Na (US), Bernd Wiesberger (Aut)
16:24 Jimmy Walker (US), Ian Poulter (Eng), Ryan Palmer (US)
16:35 JT Poston (US), Adam Hadwin (Can), Joe Long (Eng)*
16:46 Luis Fernando Barco (Per), Dylan Meyer (US), Matthew Sharpstene (US)*
16:57 Mario Carmona (Mex), Wilson Furr (US), Davis Shore (US)
20:30 Zach Zaback (US), Steve Allan (Aus), Eric Cole (US)
20:41 Hayden Buckley (US), Taylor Montgomery (US), Jordan Smith (Eng)
20:52 Chez Reavie (US), Richard Bland (Eng), Troy Merritt (US)
21:03 Robert MacIntyre (Sco), Victor Perez (Fra), Matt Wallace (Eng)
21:14 Tyler Strafaci (US), Hideki Matsuyama (Jpn), Bryson DeChambeau (US)
21:25 Adam Scott (Aus), Sergio Garcia (Spn), Bubba Watson (US)
21:36 Dustin Johnson (US), Rory McIlroy (NI), Justin Rose (Eng)
21:47 Matt Jones (Aus), Brendan Steele (US), Cameron Smith (Aus)
21:58 Carlos Ortiz (Mex), Zach Johnson (US), Lanto Griffin (US)
22:09 Sam Burns (US), Chan Kim (US), Thomas Detry (Bel)
22:20 Ollie Osborne (US)*, Peter Malnati (US), Brian Stuard (US)
22:31 John Huh (US), Johannes Veerman (US), Zack Sucher (US)
22:42 Rick Lamb (US), Michael Johnson (US), Carson Schaake (US)
Starting on hole 10
14:45 Andy Pope (US), Brad Kennedy (Aus), Thomas Aiken (SA)
14:56 Jhonattan Vegas (Ven), Yosuke Asaji (Jpn), Marcus Armitage (Eng)
15:07 Cameron Young (US), Wilco Nienaber (SA), Guido Migliozzi (Ita)
15:18 Matthew Wolff (US), Brian Harman (US), Tommy Fleetwood (Eng)
15:29 Justin Thomas (US), Collin Morikawa (US), Brooks Koepka (US)
15:40 Matt Kuchar (US), Kevin Kisner (US), Billy Horschel (US)
15:51 Xander Schauffele (US), Phil Mickelson (US), Max Homa (US)
16:02 Jason Kokrak (US), Corey Conners (Can), Cameron Champ (US)
16:13 Sam Ryder (US), Ryo Ishikawa (Jpn), Paul Barjon (Fra)
16:24 Kyoung-Hoon Lee (Kor), Martin Laird (Sco), Dylan Frittelli (SA)
16:35 Adrian Meronk (Pol), Sung-Hoon Kang (Kor), Rafael Cabrera (Spa)
16:46 Alvaro Ortiz (Mex), Andrew Kozan (US)*, Akshay Bhatia (US)
16:57 Hayden Springer (US), Jimmy Hervol (US), Roy Cootes (US)
20:30 Taylor Pendrith (Can), Wade Ormsby (Aus), David Coupland (Eng)
20:41 Tom Hoge (US), Bo Hoag (US), Joe Highsmith (US)*
20:52 Erik van Rooyen (SA), Charl Schwartzel (SA), Christiaan Bezuidenhout (SA)
21:03 Joaquin Niemann (Chi), Garrick Higgo (SA), Cole Hammer (US)*
21:14 Lee Westwood (Eng), Stewart Cink (US), Paul Casey (Eng)
21:25 Will Zalatoris (US), Jordan Spieth (US), Scottie Scheffler (US)
21:36 Patrick Reed (US), Jon Rahm (Spa), Marc Leishman (Aus)
21:47 Louis Oosthuizen (SA), Sung Jae Im (Kor), Patrick Cantlay (US)
21:58 Kevin Streelman (US), Charley Hoffman (US), Branden Grace (SA)
22:09 Brendon Todd (US), Sebastian Munoz (Col), Rikuya Hoshino (Jpn)
22:20 Matthew Southgate (Eng), Matthias Schmid (Ger)*, Wyndham Clark (US)
22:31 Dylan Wu (US), Justin Suh (US), Spencer Ralston (US)*
22:42 Kyle Westmoreland (US), Luis Gagne (Crc), Christopher Crawford (US)
Friday, 18 June
Starting on hole one
14:45 Taylor Pendrith (Can), Wade Ormsby (Aus), David Coupland (Eng)
14:56 Tom Hoge (US), Bo Hoag (US), Joe Highsmith (US)*
15:07 Erik van Rooyen (SA), Charl Schwartzel (SA), Christiaan Bezuidenhout (SA)
15:18 Joaquin Niemann (Chi), Garrick Higgo (SA), Cole Hammer (US)*
15:29 Lee Westwood (Eng), Stewart Cink (US), Paul Casey (Eng)
15:40 Will Zalatoris (US), Jordan Spieth (US), Scottie Scheffler (US)
15:51 Patrick Reed (US), Jon Rahm (Spa), Marc Leishman (Aus)
16:02 Louis Oosthuizen (SA), Sung Jae Im (Kor), Patrick Cantlay (US)
16:13 Kevin Streelman (US), Charley Hoffman (US), Branden Grace (SA)
16:24 Brendon Todd (US), Sebastian Munoz (Col), Rikuya Hoshino (Jpn)
16:35 Matthew Southgate (Eng), Matthias Schmid (Ger)*, Wyndham Clark (US)
16:46 Dylan Wu (US), Justin Suh (US), Spencer Ralston (US)*
16:57 Kyle Westmoreland (US), Luis Gagne (Crc), Christopher Crawford (US)
20:30 Andy Pope (US), Brad Kennedy (Aus), Thomas Aiken (SA)
20:41 Jhonattan Vegas (Ven), Yosuke Asaji (Jpn), Marcus Armitage (Eng)
20:52 Cameron Young (US), Wilco Nienaber (SA), Guido Migliozzi (Ita)
21:03 Matthew Wolff (US), Brian Harman (US), Tommy Fleetwood (Eng)
21:14 Justin Thomas (US), Collin Morikawa (US), Brooks Koepka (US)
21:25 Matt Kuchar (US), Kevin Kisner (US), Billy Horschel (US)
21:36 Xander Schauffele (US), Phil Mickelson (US), Max Homa (US)
21:47 Jason Kokrak (US), Corey Conners (Can), Cameron Champ (US)
21:58 Sam Ryder (US), Ryo Ishikawa (Jpn), Paul Barjon (Fra)
22:09 Kyoung-Hoon Lee (Kor), Martin Laird (Sco), Dylan Frittelli (SA)
22:20 Adrian Meronk (Pol), Sung-Hoon Kang (Kor), Rafael Cabrera (Spa)
22:31 Alvaro Ortiz (Mex), Andrew Kozan (US)*, Akshay Bhatia (US)
22:42 Hayden Springer (US), Jimmy Hervol (US), Roy Cootes (US)
Starting on hole 10
14:45 Zach Zaback (US), Eric Cole (US), Steve Allan (Aus)
14:56 Jordan Smith (Eng), Taylor Montgomery (US), Hayden Buckley (US)
15:07 Chez Reavie (US), Troy Merritt (US), Richard Bland (Eng)
15:18 Matt Wallace (Eng), Victor Perez (Fra), Robert MacIntyre (Sco)
15:29 Tyler Strafaci (US), Hideki Matsuyama (Jpn), Bryson DeChambeau (US)
15:40 Bubba Watson (US), Adam Scott (Aus), Sergio Garcia (Spa)
15:51 Justin Rose (Eng), Rory McIlroy (NI), Dustin Johnson (US)
16:02 Brendan Steele (US), Cameron Smith (Aus), Matt Jones (Aus)
16:13 Carlos Ortiz (Mex), Zach Johnson (US), Lanto Griffin (US)
16:24 Chan Kim (US), Thomas Detry (Bel), Sam Burns (US)
16:35 Brian Stuard (US), Ollie Osborne (US)*, Peter Malnati (US)
16:46 Johannes Veerman (US), Zack Sucher (US), John Huh (US)
16:57 Carson Schaake (US), Rick Lamb (US), Michael Johnson (US)
20:30 Sahith Theegala (US), Greyson Sigg (US), Edoardo Molinari (Ita)
20:41 JJ Spaun (US, Fabian Gomez (Arg), Chris Baker (US)
20:52 Robby Shelton (US), Patrick Rodgers (US), Pierceson Coody (US)*
21:03 Mackenzie Hughes (Can), Russell Henley (US), Harris English (US)
21:14 Henrik Stenson (Swe), Francesco Molinari (Ita), Shane Lowry (Ire)
21:25 Viktor Hovland (Nor), Tyrrell Hatton (Eng), Matthew Fitzpatrick (Eng)
21:36 Gary Woodland (US), Webb Simpson (US), Martin Kaymer (Ger)
21:47 Tony Finau (US), Daniel Berger (US), Abraham Ancer (Mex)
21:58 Bernd Wiesberger (Aut), Kevin Na (US), Si Woo Kim (Kor)
22:09 Jimmy Walker (US), Ian Poulter (Eng), Ryan Palmer (US)
22:20 JT Poston (US), Joe Long (Eng)*, Adam Hadwin (Can)
22:31 Matt Sharpstene (US)*, Dylan Meyer (US, Luis Fernando Barco (Per)
22:42 Davis Shore (US), Wilson Furr (US), Mario Carmona (US)
