Open Championship groups and tee times: Spieth packed with Johnson, Matsuyama

The Open Championship starts Thursday, and the groupings and tee times for the first two rounds have been released.

The most entertaining grouping should be Jordan Spieth, Hideki Matsuyama, and Dustin Johnson. In the final round At the U.S. Open in June, Johnson three-putted to collapse on Hole 18 and give Spieth his second Major victory of the season. The 21-year-old's quest for a Grand Slam continues at The Open.

Two-time Old Course victor Tiger Woods is grouped with Louis Oosthuizen, and Jason Day. And Bubba Watson, Ian Poulter, and Charl Schwartzel also draw together for the first two rounds.

Notable Groupings and Tee Times:

Thursday, July 16 / Friday, July 17 - all times ET

4:00 a.m. / 9:01 a.m. - Ian Poulter, Charl Schwartzel, Bubba Watson

4:33 a.m. / 9: 34 a.m. - Jordan Spieth, Hidecki Matsuyama, Dustin Johnson

4:55 a.m. / 9:56 a.m. - Tiger Woods, Louis Oosthuizen, Jason Day

7:50 a.m. / 2:49 a.m. - John Daly, Miguel Angel Jimenez, Jason Dufner

9:34 a.m. / 4:33 a.m. - Matt Kuchar, Phil Mickelson, Henrik Stenson

9:45 a.m. / 4:44 a.m. - Sir Nick Faldo, Justin Rose, Rickie Fowler

9:56 a.m. / 4:44 a.m. - Jim Furyk, Paul Casey, Branden Grace

Tournament notes:

• 2014 Open champion Rory McIlroy opted out of the tournament due to a leg injury.
• Phil Mickelson will look to seal another Major win. He won the tournament in 2013, when it was hosted at Muirfield.
• Louis Oosthuizen won the tournament the last time it was held at St. Andrews, in 2010.

See the full list of groupings and tee times here.