NOTTINGHAM, England, June 18 (UPI) -- Ivo Karlovic survived a pair of tiebreakers Wednesday in advancing to the quarterfinals of the Slazenger Open tennis tournament in England.
Karlovic, the tournament's defending champion, stretched his Nottingham winning streak to seven matches with a tough 7-6 (7-3), 7-6 (16-14) win over Sam Querrey. Karlovic's powerful serve was working well, as he had 27 aces in the match.