John Robert Isner is an American professional tennis player.

Just like other American tennis professionals like James Blake and Mardy Fish, he had his training at the Saddlebrook Academy in Tampa, Florida.

Who is John Isner brother Nathan Isner? Bio, age, married, children, Instagram

John Isner was born on April 26, 1985 (age 37 years) to Jordan Isner and Nathan  Isner in Greensboro, North Carolina, United States.

Jordan and Nathan Isner had two other children aside from John. They are Nathan Isner and Jordan Isner.

Nathan is the oldest of the three brothers while the 37-year-old John is the youngest.

He studied speech communication at the University of Georgia and Walter Hines Page Senior High School in Greensboro.

John started playing tennis at the age of seven (7).

The tennis player has been ranked as high as world No. 8 in singles and No. 19 in doubles by the Association of Tennis Professionals.

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