Wimbledon this year only counts a handful of American men in the men's singles draw. In fact, it's the lowest number since before the Open Era.

Wimbledon: Remembering Ashe's Triumph Over Connors in 1975.

Seven Americans find themselves in the main draw, the smallest group since 1947 when only five men competed for the coveted title.

U.S. No. 1 and 17th seeded John Isner kept American hopes alive on Monday when he won his opening round match against Japan's Go Soeda 7-6(5), 6-4, 6-4. Isner has never been past the third round of Wimbledon in his career.

Steve Johnson and American wildcard Denis Kudla also advanced on Monday.

Tuesday features several more Americans trying to reach the second round. No. 31 seed Jack Sock will face the big serving Australian Sam Groth. This is Sock's first ever Grand Slam event where he is a seed.

Sam Querrey, who reached the Nottingham final this past weekend, along with No. 77 Tim Smyczek are also in action.

American men still reign supreme on the doubles court. Sock, along with his Canadian partner Vasek Pospisil, are the reigning Wimbledon men's doubles champions. Bob and Mike Bryan share the ATP World No. 1 men's doubles ranking.