5 tennis stars who have run a marathon

Caroline Wozniacki

#3 James Blake

James Blake

The retired tennis star who was famed for his quick and high-intensity style of play on the court completed the New York City Marathon in 2015 with a timing of 3 hours 51 minute and 19 seconds. When questioned about the difference in playing tennis at US Open and running the marathon in NYC, Blake was quoted as saying to ESPN, "It's a little different, but both are amazing. Here (at the marathon) they are cheering for so many people. The Open they are cheering for just you."

He was greeted at the finish line by his wife, daughter and another tennis star, Victoria Azarenka. However, after his unique experience, Blake joked around saying, "Never again," for long distance running in the future. With his run, the player raised funds for his own foundation which works for early detection cancer research at Memorial Sloan-Kettering Cancer Center.