Here's a glance at Saturday's four Ryder Cup foursomes matches (alternative shot), with the first group teeing off at 7:20 a.m. at Medinah's Course No. 3 and the final grouping going off at 8:05 a.m.
The afternoon fourball pairings will be announced after the morning matches.
USA leads Europe 5 to 3 heading into Day 2 of the Ryder Cup, with 12 singles matches in play on Sunday.
UNITED STATES: Webb Simpson/Bubba Watson
EUROPE: Justin Rose/Ian Poulter
7:20 a.m. tee: Simpson was a winner in his first-ever Ryder Cup match on Friday while paired with Watson. Both sat out the morning session but were 9-under-par for their first 10 holes once they got on the course. Rose and Poulter were morning winners, but Poulter didn't play in the afternoon.
Quote: "`I couldn't ask for more in my first day as a Ryder Cup Team member. Bubba and I gelled so well together, and we're great friends off the course," Simpson said.
UNITED STATES: Keegan Bradley/Phil Mickelson
EUROPE: Lee Westwood/Luke Donald
7:35 a.m. tee: Mickelson was paired with Bradley, a Ryder Cup rookie, twice on Thursday and they were rousing winners both times. This time, though, they catch two of Europe's most successful match play competitors. Donald and Westwood are both former world No. 1s, and Donald will be rested after sitting out Friday's afternoon session.
Quote: "The more pressure the situation, the better Keegan plays, the better he sees the shot, the better he focuses, the better the result," said Mickelson.
UNITED STATES: Jason Dufner/Zach Johnson
EUROPE: Nicolas Colsaerts/Sergio Garcia
7:50 tee: Neither Dufner nor Colsaerts had trouble in making their Ryder Cup debuts on Friday. In fact, Colsaerts was the star of the show with his eagle and eight birdies. Garcia is a Ryder Cup veteran, but he didn't qualify for the European squad in 2010 and is happy to be back in the mix.
Quote: "`I've had a wonderful time perfecting my putting skills with Dave Stockton, and it brought me a lot of confidence -- especially on those slick greens that we get to play in America," said Colsaerts.
UNITED STATES: Jim Furyk/Brandt Snedeker
EUROPE: Rory McElroy/Graeme McDowell
8:05 a.m. tee: This is a rematch of Friday's first match. World No. 1 McIlroy and his fellow Northern Ireland partner split their matches on Friday and weren't especially impressive doing it. Furyk and Snedeker led early but didn't put up much of a fight once they fell behind at the sixth hole.
Quote: ``You get used to the USAs, USAs, and it just becomes normal. It's part of the week, and we are trying to shut them up as much as we can," McIlroy said.