Juan Martin Del Potro serve sees off Ivo Karlovic
Juan Martin Del Potro serves impeccably as he records a straight-sets win over Ivo Karlovic in the Sony Ericsson Open.
Mar 25, 00:11
Result: John Isner progresses in Paris
John Isner comes back from one set down to defeat Stanislas Wawrinka in Paris.
Nov 8, 18:39
