We spoke with John Isner briefly at the BCF Tennis Challenge about how he practices. I asked him whether he spends a lot of time working on his serve to make it a more dominant weapon, or if he focuses on the areas of his game that aren’t quite as strong.
BTW, if anyone knows of a great brand of step ladders please let me know in the comments! I think I’m going to get one for the next time I interview Isner… man he’s tall!