The 42nd Walker Cup Match was played on September 12 and 13, 2009 at the Merion Golf Club (East course) in Ardmore, Pennsylvania, United States.

The Merion Golf Club (East course) in Ardmore, Pennsylvania is a par 70 course.

Hugh Irvine Wilson is credited with designing it, and it opened for play in 1912.

It has also hosted the Curtis Cup and Eisenhower Trophy team events.

Ten players for the USA and Great Britain & Ireland participate in the event plus one non-playing captain for each team.