GLENEAGLES, Scotland — As if players don’t already face enough pressure in the Ryder Cup, the walk into golf’s most boisterous arena goes through a tunnel of time. The other side is European blue with a roll call of winners that feature Tony Jacklin and Nick Faldo, Colin Montgomerie and Bernhard Langer. Keegan Bradley and Phil Mickelson went 3-0 at Medinah, and they are the anchor match against Rory McIlroy and Sergio Garcia, Europe’s most powerful duo. The wrinkle is the youngest pairing in Ryder Cup history — 21-year-old Jordan Spieth and 24-year-old Patrick Reed — going against Europe stalwart Ian Poulter and Gallacher, another rookie and the lone Scot in a Ryder Cup that has not been held in the home of golf since 1973.