Mikhail Youzhny retired from his second round match at the Paris Masters on Tuesday with a back injury, relinquishing any hope of qualifying for the ATP Finals later this month.
The ninth-seeded Russian retired while trailing against Ernests Gulbis of Latvia 6-4, 3-0. Youzhny was in 10th place in the ATP Finals race and needed to reach the final in Paris to have a chance to qualify.
Gulbis will next play either Andy Roddick of Jarkko Nieminen of Finland.
Three berths for the London event from Nov. 21-28 are up for grabs in Paris with five players still fighting for a spot at the year-end tournament: Roddick, Tomas Berdych, David Ferrer, Fernando Verdasco and Jurgen Melzer.
Verdasco kept an outside chance of qualifying after rallying from a set and a break down to beat Arnaud Clement 3-6, 6-3, 6-0.
The sixth-seeded Spaniard, who claimed only his second win since reaching the U.S. Open quarterfinals, made the most of Clement's sudden drop of form to win the last 10 games of the match.
''In the third set I saw him a little bit tired,'' the left-handed Verdasco said. ''He started making double faults at the end of the second set and the beginning of the third set, so this helped me to take advantage and break him and take more confidence also in my game. Finally I finished playing good.''
Verdasco must reach the semifinals this week to stand a chance of playing in London.
Former champion David Nalbandian of Argentina made short work of Marcel Granollers to reach the second round with a 6-3, 6-1 win. The Argentine will next face Andy Murray.
''Tomorrow is going to be one of those matches you really want to play and really want to win,'' Nalbandian said. ''He is a very complete player and it's difficult to play offensively against him.''
Juan Monaco defeated Sam Querrey 7-6 (7), 6-2, while Thomaz Bellucci of Brazil served 21 aces and fended off seven of the eight break points he faced to upset Philipp Kohlschreiber 7-6 (5), 5-7, 6-3.
Bidding for a spot in France's Davis Cup for next month's final against Serbia, Gilles Simon recovered from a slow start on the fast indoor court to beat Andrey Golubev of Kazakhstan 3-6, 6-4, 6-3. Simon next plays fourth-seeded Robin Soderling.
The center court in Paris is faster this year, which should suit top-seeded Roger Federer in his bid to win the tournament for the first time. The 16-time Grand Slam champion has never advanced past the quarterfinals at the Paris Masters.
''I think it's nice that some tournaments have made the courts faster again,'' said Federer, who will start against Richard Gasquet on Wednesday. ''I'm not saying it should be the trend for all the tournaments, but indoor is supposed to be faster. We only have one indoor Masters 1000, so I think it should be the fastest one, which is the case.''
