The 153rd Open Championship begins at 1:35 a.m. ET Thursday morning at Royal Portrush Golf Club in Northern Ireland. Below are the scheduled pairings for the opening round and viewing options. Thursday's featured groups (All times ET) 4:58 a.m. -- Xander Schauffele, J.J. Spaun, Jon Rahm 5:09 a.m. -- Shane Lowry, Collin Morikawa, Scottie Scheffler 9:48 a.m. -- Robert MacIntyre, Bryson DeChambeau, Justin Rose 9:59 a.m. -- Jordan Spieth, Ludvig Aberg, Viktor Hovland 10:10 a.m. -- Rory McIlroy, Justin Thomas, Tommy Fleetwood First round tee times (All times ET; (a) amateur) 1:35 a.m. -- Padraig Harrington, Nicolai Hojgaard, Tom McKibbin 1:46 a.m. -- Louis Oosthuizen, Guido Migliozzi, K.J. Choi 1:57 a.m. -- Cameron Smith, Marco Penge, Justin Hastings (a) 2:08 a.m. -- Jason Day, Taylor Pendrith, Jacob Skov Olesen 2:19 a.m. -- Phil Mickelson, Daniel van Tonder, Ryan Peake 2:30 a.m. -- Max Greyserman, Byeong Hun An, Niklas Norgaard 2:41 a.m. -- Jordan Smith, Haotong Li, Dustin Johnson 2:52 a.m. -- Darren Clarke, Davis Riley, Lucas Herbert 3:03 a.m. -- Kevin Yu, Julien Guerrier, Mikiya Akutsu 3:14 a.m. -- Thomas Detry, Chris Gotterup, Lee Westwood 3:25 a.m. -- Patrick Cantlay, Cameron Young, Mackenzie Hughes 3:36 a.m. -- Thorbjorn Olesen, Matthew Jordan, Filip Jakubcik (a) 3:47 a.m. -- Henrik Stenson, Stephan Jaeger, Sebastian Soderberg 4:03 a.m. -- Kristoffer Reitan, Martin Couvra, Adrien Saddier 4:14 a.m. -- Takumi Kanaya, Justin Walters, Bryan Newman (a) 4:25 a.m. -- Hideki Matsuyama, Ryan Fox, Matt Fitzpatrick 4:36 a.m. -- Sepp Straka, Ben Griffin, Akshay Bhatia 4:47 a.m. -- Sam Burns, Aldrich Potgieter, Brooks Koepka 4:58 a.m. -- Xander Schauffele, J.J. Spaun, Jon Rahm 5:09 a.m. -- Shane Lowry, Collin Morikawa, Scottie Scheffler 5:20 a.m. -- Corey Conners, Wyndham Clark, Tom Hoge 5:31 a.m. -- Denny McCarthy, Nico Echavarria, Patrick Reed 5:42 a.m. -- Matt Schmid, Ryggs Johnston, Richard Teder (a) 5:53 a.m. -- Dylan Naidoo, Darren Fichardt, John Axelsen 6:04 a.m. -- Justin Suh, Oliver Lindell, Jesper Sandborg 6:15 a.m. -- Sadom Kaewkanjana, Riki Kawamoto, Sampson Zheng 6:26 a.m. -- Stewart Cink, Matteo Manassero, Marc Leishman 6:47 a.m. -- Francesco Molinari, Jesper Svensson, Connor Graham (a) 6:58 a.m. -- Zach Johnson, Daniel Hillier, Daniel Brown 7:09 a.m. -- Adam Scott, Rickie Fowler, Ethan Fang (a) 7:20 a.m. -- Laurie Canter, Elvis Smylie, Sergio Garcia 7:31 a.m. -- Andrew Novak, Matthieu Pavpn, Matt Wallace 7:42 a.m. -- Davis Thompson, Dean Burmester, Rikuya Hoshino 7:53 a.m. -- Si Woo Kim, Shugo Imahira, Sebastian Cave (a) 8:04 a.m. -- Michael Kim, Bud Cauley, John Parry 8:15 a.m. -- Matt McCarty, Shaun Norris, Angel Hidalgo 8:26 a.m. -- Keegan Bradley, Sungjae Im, Daniel Berger 8:37 a.m. -- Rasmus Hojgaard, Christiaan Bezuidenhout, Romain Langasque 8:48 a.m. -- Aaron Rai, Sahith Theegala, Harry Hall 9:04 a.m. -- Justin Leonard, Thriston Lawrence, Antoine Rozner 9:15 a.m. -- J.T. Poston, Chris Kirk, Carlos Ortiz 9:26 a.m. -- Brian Harman, Maverick McNealy, Joaquin Niemann 9:37 a.m. -- Russell Henley, Tyrrell Hatton, Min Woo Lee 9:48 a.m. -- Robert MacIntyre, Bryson DeChambeau, Justin Rose 9:59 a.m. -- Jordan Spieth, Ludvig Aberg, Viktor Hovland 10:10 a.m. -- Rory McIlroy, Justin Thomas, Tommy Fleetwood 10:21 a.m. -- Harris English, Nick Taylor, Tony Finau 10:32 a.m. -- Lucas Glover, Johnattan Vegas, Tom Kim 10:43 a.m. -- Brian Campbell, John Catlin, Frazer Jones (a) 10:54 a.m. -- Nathan Kimsey, Jason Kokrak, Cameron Adam (a) 11:04 a.m. -- Daniel Young, Curtis Luck, Curtis Knipes 11:16 a.m. -- Younghan Song, George Bloor, O.J. Farrell How to watch The Open Championship (All times ET) 1:30-4 a.m.: Stream on Peacock 4 a.m-3:30 p.m.: USA Network, NBC Sports app, Peacock, Fubo 3:30-6 p.m.: Golf Channel --Field Level Media