Isner v Karlovic in Memphis quarters – who will win?

Question

It’s a battle of two of the tallest players in tennis. Who will win the Memphis quarter-final between John Isner and Ivo Karlovic?

Answer 1

It will quite simply come down to who can serve better on the day. Each relies on a big serve as their stock in trade, and to that end Karlovic’s is probably stronger (he certainly serves more aces).