The men's semifinal field is set for the French Open tennis tournament in Paris after Argentina's Mariano Puerta and Nikolay Davydenko of Russia scored quarterfinal wins Wednesday.

Puerta, unseeded at this event, won the first set, but then lost the next two before taking the match in five sets, 6-2, 3-6, 1-6, 6-3, 6-4.

The 37th-ranked Puerta was victorious despite making 70 unforced errors in the match, which lasted more than 3 1/2 hours.

The Argentine player meets 12th-seeded Nikolay Davydenko of Russia, a five-set winner over Spain's Tommy Robredo (3-6, 6-1, 6-2, 4-6, 6-4). Davydenko and Puerta met earlier this year at the Hamburg Masters, with Davydenko winning in straight sets (7-5, 6-3).

The other semifinal features world number one men's player Roger Federer of Switzerland facing rising Spanish star Rafael Nadal after they won their quarterfinals on Tuesday.

The women's semifinals are Thursday with two former champions on the verge of facing one another in the finals. Belgian Justine Henin-Hardenne, the 2003 winner, takes on seventh seed Nadia Petrova of Russia while 2000 champion Mary Pierce of France faces Elena Likhovtseva of Russia.

Some information for this report provided by AP.