Warsaw, May 2:

Polish teenager Agnieszka Radwanska upset 2004 French Open champion Anastasia Myskina of Russia 6-4, 4-6, 6-4 on Tuesday in the first round of the clay-court J&S Cup.

Radwanska, 17, broke Myskina to open the third set. The 12th-ranked Russian had a break point at 5-4 down, but hit a forehand long at deuce to give the 312th-ranked Radwanska match point. Radwanska hit a forehand winner to seal the match.

Former world number one Martina Hingis made a winning return in her first clay court match in four years as she overcame a gallant challenge from Russia’s Maria Kirilenko. The Swiss star claimed a tense and skilful two-hour battle 7-5, 7-6 (7/1), despite her opponent once serving for the first set and twice for the second.

Estoril Open

ESTORIL: Russian Nikolay Davydenko ended a hat-trick of clay disappointments, winning his first match of the season on the surface to advance to the second round of the Estoril Open. Davydenko overcame a 5-2 deficit in the first set to defeat American Vince Spadea 7-6 (7-3), 6-3.

Justin Gimelstob managed to strike back for the Americans with a 3-6, 7-5, 6-3 victory over Czech Lukas Dlouhy.

Gilles Muller of Luxembourg notched the first upset when he put out eighth seed Christophe Rochus of Belgium 6-2, 6-0.