Berdych blitzed by Karlovic

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The towering Croat sent down 45 aces during his 7-5 6-7 6-3 win over Berdych, who failed to earn a single break point in Halle.

Karlovic won 90 per cent of points on his first serve, with the Czech unable to put a dent in his rocket-like deliveries, and wrapped up the win with his final ace.

Earlier in the match, Berdych had conceded the first break with a double fault, and fended off a match point in the second set tie-break before Karlovic conceded it with an ugly volley into the net.

But the Zagreb man snatched another break in the third set to move 3-1 up and secured victory with a stream of aces.