The famed Medinah Country Club will host this weekend's clash between America and Europe, with action getting under way early Friday morning.
The foursome matches began at 8:20 a.m. ET, with the four-ball matches (lineups to be decided later in the day) set to go off at 1:05 p.m.
Here are the tee times and matchups for the foursomes.
8:20 a.m. — Europe: Rory McIlroy and Graeme McDowell versus USA: Brandt Snedeker and Jim Furyk
8:35 a.m. — Europe: Luke Donald and Sergio Garcia versus USA: Keegan Bradley and Phil Mickelson
8:50 a.m. — Europe Lee Westwood and Francesco Molinari versus USA: Jason Dufner and Zach Johnson
9:05 a.m. — Europe: Ian Poulter and Justin Rose versus USA: Steve Stricker and Tiger Woods
Here are the matchups and tee times for the four-ball round (times ET)
1:05 p.m. — Europe: Paul Lawrie and Peter Hanson versus USA: Bubba Watson and Webb Simpson
1:20 p.m. — Europe: Rory McIlroy and Graeme McDowell versus USA: Phil Mickelson and Keegan Bradley
1:35 p.m. — Europe: Justin Rose and Martin Kaymer versus USA: Justin Rose and Martin Kaymer
1:50 p.m. — Europe: Lee Westwood and Nicolas Colsaerts versus USA: Tiger Woods and Steve Stricker