POTOMAC, Md. — President Barack Obama is playing golf at a private club in Maryland with ESPN co-host Michael Wilbon.Obama played at a different club late last month with Tony Kornheiser, Wilbon's sidekick on the sports show "Pardon the Interruption"Obama's venue Saturday was TPC Potomac at Avenel Farm in Potomac, Maryland. The club has a championship course on 220 rolling acres in Montgomery County.The White House says the other two members of Obama's foursome are White House aide Marvin Nicholson and Glenn Hutchins. Hutchins is a co-founder of the technology investment firm Silver Lake Partners. Obama has played with Wilbon and Hutchins on past outings.Obama usually plays golf at military installations in Maryland or Virginia.