The Americans again are showing signs of a ''pod system'' that Paul Azinger made popular (and successful) in 2008, and Davis Love used in a modified way in 2012. For Tuesday's practice sessions, one foursome was Jordan Spieth, Patrick Reed, Dustin Johnson and Matt Kuchar. Spieth and Reed were partners in 2014 at Gleneagles, while Johnson and Spieth were together at the Presidents Cup last year. More...