STUTTGART, Germany, July 12 (UPI) -- Second-seeded Jurgen Melzer fell in first-round play Tuesday at the Mercedes Cup tennis tournament in Germany.
Santiago Giraldo fired seven aces and won 79 percent of the points off his first serves in ousting Melzer 6-4, 7-5. Melzer recorded a break in each set but was broken twice in return.
Melzer had company on the upset column as seeded players went 1-3 on the day.
No. 3-seeded Mikhail Youzhny advanced with a solid 6-3, 6-3 win over Philipp Petzschner but Federico del Bonis ousted fifth-seeded Florian Mayer 6-2, 6-3 and Cedrik-Marcel Stebe eliminated No. 6-seeded Nikolay Davydenko 3-6, 6-1, 6-4.
Top-seeded Gael Monfils only got six games in -- he was leading Victor Hanescu 4-2 -- when his match was suspended because of rain.
Pavol Cervenak was a 6-4, 4-6, 6-2 winner over Mischa Zverev; Juan Carlos Ferrero defeated Bastian Knittel 6-2, 6-4; and Benoit Paire claimed a 6-7 (3-7), 6-4, 6-2 win over Evgeny Donskoy.
Also Fabio Fognini breezed by Robin Kern 6-4, 6-1; Pablo Andujar took 60 percent of the points in a 6-2, 6-1 rout of Victor Crivoi; Lukasz Kubot beat Daniel Gimeno-Traver 7-6 (7-2), 3-6, 6-2; and Jeremy Chardy took out Tobias Kamke 7-6 (7-1), 6-1 in other first-round matches.
