Play is underway on Day 2 at the WGC-Cadillac Match Play Championship. Follow along here for match-by-match updates from TPC Harding Park:
Group 1: (18) Billy Horschel def. (53) Jason Dufner, 3 and 2: Horschel continues his roll, eliminating Dufner after birdies on four of his first 10 holes. While the former PGA champ will head home Friday, Horschel will have a Walker Cup rematch with McIlroy to decide the group.
Group 1: (1) Rory McIlroy def. (35) Brandt Snedeker, 2 up: McIlroy improves to 2-0, but Snedeker made him sweat. The world No. 1 played bogey-free golf and never trailed, closing things out when Snedeker's birdie putt on No. 18 failed to drop. He'll head into a winner-take-all match Friday with Horschel, while Snedeker and Dufner will face off for bragging rights and OWGR points.
Group 2: (2) Jordan Spieth def. (40) Matt Every, 4 and 3: Every grabbed an early 2-up lead, but Spieth's putter was unstoppable. He one-putted each of the last 10 greens, holing seven birdies for the second straight day to improve to 2-0 and eliminate Every from group play.
Group 2: (26) Lee Westwood def. (62) Mikko Ilonen, 1 up: Ilonen held a 3-up lead at the turn, but Westwood won four of the next five holes to take the lead. After the Englishman missed a short putt on No. 18 to end it, Ilonen followed suit to squander a chance to tie. Now Westwood, 42, plays Spieth, 21, with the winner advancing.
Group 3: (3) Henrik Stenson def. (42) Brendon Todd, 3 and 2: Stenson notched his first win of the week, but it still wasn't enough to keep alive his hopes of advancing. The Swede raced to an early lead after birdies on four of his first five holes, but the result of the other match in their group meant both players were eliminated.
Group 3: (60) John Senden def. (23) Bill Haas, 4 and 3: The Aussie pulled off his second straight upset, winning Nos. 12-14 to turn a 2-up lead into a decisive victory. While Senden was the lowest-seeded player in the group, he has already punched his ticket to the Round of 16 having already defeated Stenson on Wednesday.
Group 4: (4) Bubba Watson def. (33) Keegan Bradley, 4 and 2: The match was all square through 10 holes before Watson won three straight holes to take control. He improves to 2-0, while Bradley fell to 0-2 and became the first player officially eliminated from group play.
Group 4: (29) Louis Oosthuizen def. (63) Miguel Angel Jimenez, 2 up: Oosthuizen won each of the first two holes and never trailed in the match. While Jimenez squared things through 16 holes, Oosthuizen won each of the final two holes to eliminate the Spaniard and set up a winner-take-all match Friday with Watson.
Group 5: (44) Thongchai Jaidee def. (5) Jim Furyk, 3 and 1: Jaidee pulled off the first upset of the second day, winning each of the first four holes and holding a 5-up lead after six. Furyk fought back, but it wasn't enough. Both players are now 1-1.
Group 5: (59) George Coetzee def. (17) Martin Kaymer, 19 holes: Coetzee built a 3-up lead through 11 holes before Kaymer won three holes in a row to square the match. The German missed a short putt on No. 18 to close out the match, then Coetzee closed things out with a birdie on the first extra hole, leaving all four players in the group at 1-1.
Group 6: (60) Marc Leishman def. (23) Ryan Palmer, 4 and 3. After defeating Justin Rose on Thursday, Leishman had little trouble dispatching Palmer. He was 3 up at the turn, increased the lead to four holes when Palmer (0-2) bogeyed the 10th and cruised the rest of the way.
Group 6: (6) Justin Rose def. (34) Anirban Lahiri, 19 holes: The top seed in the group barely avoided elimination, as Rose never led in the match until closing out Lahiri in overtime. Both players move to 1-1, meaning they're both still alive to advance but will need some help from Leishman, who faces Lahiri Friday.
Group 7: (38) Branden Grace def. (7) Jason Day, 4 and 3: Grace eagled the first hole, birdied the second and never trailed. The South African played his first 12 holes in 6 under and moves to 1-1, while Day (0-2) will not advance.
Group 7: (49) Charley Hoffman def. (24) Zach Johnson, 2 and 1: Hoffman improved to 2-0 despite his standing as the lowest-ranked player in the group. The pair halved the first hole with birdies but played rather poorly from there, combining for seven bogeys and no birdies across the next 10 holes. Hoffman took command with a birdie on No. 16 and is in control of the group.
Group 8: (58) Matt Jones def. (21) Victor Dubuisson, 2 up: Jones never trailed in the match and won three of the first eight holes before the Frenchman battled back. After Dubuisson missed the green at No. 17, Jones rolled in a 16-foot birdie putt and closed things out with a birdie on the next hole to eliminate Dubuisson.
Group 8: (37) Charl Schwartzel def. (8) Dustin Johnson, 20 holes: Johnson built a lead on the front nine and held a 3-up advantage through 11 holes, but Schwartzel chipped away and ultimately squared things with a birdie on No. 18. The South African never led in the match until a 20th-hole birdie improved his record to 2-0, dropping Johnson to 1-1.
Group 9: (25) Chris Kirk def. (64) Francesco Molinari, 2 and 1: Molinari won the first hole and led through much of the opening nine, but Kirk squared things on No. 8 and never trailed after No. 11. Neither player made a birdie over the last nine holes of a relatively uneventful match, and both are now 1-1 for the week.
Group 9: (36) Paul Casey def. (9) Adam Scott, 1 up: Casey improves to 2-0 and will face Molinari Friday with a chance to win the group. Scott got off to a strong start but bogeyed three of his final six holes, effectively ending his week that never got off the ground as his putting woes continue.
Group 10: (39) Bernd Wiesberger def. (10) Sergio Garcia, 2 and 1: Garcia appeared in control, with a 2-up lead after 10 holes, before the Austrian rallied. Wiesberger made four birdies in a six-hole stretch from Nos. 11-16, and now both players sit at 1-1 for the week.
Group 10: (54) Tommy Fleetwood def. (30) Jamie Donaldson, 21 holes: The longest match of the day went to Fleetwood, who recorded his seventh birdie of the day on the 21st hole. Donaldson had a chance to take control of the group, but now all four players sit at 1-1 heading into the final day.
Group 11: (50) Gary Woodland def. (27) Ian Poulter, 3 and 2: Poulter is heralded as a match-play wizard, but he was eliminated after making only one birdie in his second match. Woodland won five of the first eight holes and cruised to victory, improving to 2-0 for the week.
Group 11: (46) Webb Simpson def. (11) Jimmy Walker, 19 holes: Simpson's affinity for San Francisco continues, as he erased an early 2-down deficit, squared the match with an eagle on No. 18 and won it when Walker mis-fired in extra holes. The result sets up a winner-take-all match between Simpson and Woodland, the group's lowest-seeded players.
Group 12: (12) J.B. Holmes def. (45) Russell Henley, 19 holes: Neither player led by more than one hole in this match, which reached a low point when No. 13 was halved with double bogeys. Holmes squared the match with a birdie on No. 16, then won when Henley found trouble in sudden death. Henley is eliminated from the group.
Group 12: (19) Brooks Koepka def. (51) Marc Warren, 20 holes: Koepka was 3 down with three holes to play, but staged a furious comeback to square the match and then won it by stuffing his approach to the second extra hole. The loss drops Warren to 1-1 and means Koepka can win the group by defeating Holmes on Friday.
Group 13: (13) Rickie Fowler def. (47) Shane Lowry, 1 up: Lowry led for much of the way before Fowler caught fire with his putter, holing three putts of more than 15 feet to square the match. He won with a birdie on No. 18 and became the first player to officially advance out of group play.
Group 13: (55) Harris English def. (32) Graeme McDowell, 2 and 1: McDowell held a 3-up lead through eight holes, but English rallied to win five of the next six holes. The result dropped the Ulsterman to 0-2, while English moved to 1-1 but was eliminated when Fowler defeated Lowry.
Group 14: (14) Matt Kuchar def. (41) Stephen Gallacher, 3 and 2: Gallacher held a 2-up lead at the turn before Kuchar won six of the next seven holes, including an eagle on No. 12. At 0-2, Gallacher is eliminated while Kuchar remains in the mix at 1-1.
Group 14: (31) Hunter Mahan def. (61) Ben Martin, 5 and 3: Mahan could be the hottest player in the field, and he has yet to drop a single hole through three matches. He didn't have to work very hard against Martin, who bogeyed three of his first seven holes and failed to make a single birdie.
Group 15: (57) Andy Sullivan def. (28) Ryan Moore, 3 and 2: Sullivan won two of the first four holes and never trailed, playing 16 holes in 5 under to move to 1-1. Moore's birdie run on Nos. 12-14 was too little too late, and at 0-2 he is eliminated.
Group 15: (48) Danny Willett def. (15) Patrick Reed, 2 and 1: A rather surprising result considering Reed's match-play acumen, but Willett was nearly mistake-free and took a 3-up lead when his drive at the par-4 12th left a tap-in eagle. He moves to the top of the group at 2-0, while Reed drops to 1-1 and needs help to advance.
Group 16: (21) Kevin Na def. (54) Alexander Levy, 3 and 1. Na (1-1) handed the Frenchman his second loss by going 1 up with a birdie at the first hole and never surrendering the lead.