John Isner has parted ways with longtime coach Craig Boynton and has hired veteran U.S. coach Michael Sell, the New York Timesreports. Boynton served as Isner’s coach since March 2009 and took ...
One of the major contributors to the 25-year-old Pole’s recent success has been his ongoing partnership with veteran coach Craig Boynton. Boynton has coached a long list of ATP professionals ...