Reigning champion Ivo Karlovic was knocked out of the first round of the Delray Beach Open after suffering a shock 3-6 6-3 2-6 loss against John-Patrick Smith on Monday.

POREC, Croatia Ivo Karlovic has rallied from two sets down to beat James Blake 6-7 (5), 4-6, 6-3, 7-6 (3), 7-5 and give Croatia a 1-0 lead over the United States in their best-of-five Davis Cup ...

O Omnisports Pulse Karlovic, seeded fifth at the ATP 250 indoor hard-court event, crunched 23 aces in a 7-6 (9-7) 6-3 victory over Lukas Lacko.