Spieth leads McIlroy by a stroke after a second round in which McIlroy made up three shots. They make up the final twosome on Saturday, and are scheduled to tee off at 2:50 p.m. ET.
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Besides having two superstars go head to head, another fun story line on Saturday will be the play of Bryson DeChambeau, who is four shots back in his final tournament as an amateur. DeChambeau dropped four strokes to par in his final three holes Friday after being in contention for much of the afternoon.
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Tee times for the third round (all times Eastern):
9:50 a.m.: Bubba Watson 10 a.m.: Justin Thomas, Kevin Kisner 10:10 a.m.: Louis Oosthuizen, Patrick Reed 10:20 a.m.: Victor Dubuisson, Webb Simpson 10:30 a.m.: Bill Haas, Larry Mize 10:40 a.m.: Anirban Lahiri, Martin Kaymer 10:50 a.m.: Charley Hoffman, Adam Scott 11 a.m.: Matt Kuchar, Thongchai Jaidee 11:10 a.m.: Henrik Stenson, Hunter Mahan 11:20 a.m.: Romain Langasque (a), Harris English 11:30 a.m.: Rafael Cabrera-Bello, Ian Poulter 11:40 a.m.: Matthew Fitzpatrick, Billy Horschel 11:50 a.m.: Justin Rose, Jamie Donaldson
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12:20 p.m.: Emiliano Grillo, Kevin Na 12:30 p.m.: Lee Westwood, Paul Casey 12:40 p.m.: Angel Cabrera, Kevin Streelman 12:50 p.m.: Davis Love III, Jimmy Walker 1 p.m.: Chris Wood, Brooks Koepka 1:10 p.m.: J.B. Holmes, Bernd Wiesberger 1:30 p.m.: Bernhard Langer, Jason Day 1:40 p.m.: Troy Merritt, Smylie Kaufman 1:50 p.m.: Dustin Johnson, Daniel Berger 2 p.m.: Shane Lowry, Bryson DeChambeau (a) 2:10 p.m.: Danny Willett, Sergio Garcia 2:20 p.m.: Hideki Matsuyama, Kiradech Aphibarnrat 2:30 p.m.: Brandt Snedeker, Soren Kjeldsen 2:40 p.m.: Danny Lee, Scott Piercy 2:50 p.m.: Jordan Spieth, Rory McIlroy
(a) Amateur.
Track the scoring from Augusta . You are keystrokes away from tee and strokes in play.