Wednesday's ATP round-up
World Indoor Tournament
Safin made his return after injury
Second seed Roger Federer fought back to beat Sweden's Thomas Enqvist 3-6 6-3 6-4 in the first round of the World Indoor Tournament.
Switzerland's Marseille Open winner struggled in the opener and went a set behind in 31 minutes.
In the second set, both players struggled to hold serve before Federer finally broke the world number 71 in the eighth game.
World number five Federer upped the pace in the decider and sealed the win with an ace on match point.
He will face Fabrice Santoro in the
second round after the Frenchman beat Romania's Andrei Pavel 6-4 4-6
Meanwhile, Russia's Marat
Safin edged past Belgium's Xavier
Malisse 7-5 6-3.
The third seed, recovered from a wrist injury which forced him out of last month's Australian Open, will meet Davis Cup team-mate Yevgeny Kafelnikov in the second round.
Safin, the 2000 US Open champion, finally broke the deadlock in the 11th game before going on to wrap up the second set more easily.
Earlier, Nicolas Escude began his bid to become the first man to win a hat-trick of World Indoor Tournament titles with a solid 6-3 6-3 win over French Open champion Albert Costa.
Escude had withdrawn from his semi-final at the Marseille Open last week with a strained right hamstring.
But the Frenchman showed few signs of the injury as he brushed aside the fourth seed.
"I felt it a little bit but I just tried to play my game and not take any risks," said Escude, who had blamed the injury on the demands of Davis Cup duty the previous week.
Escude broke serve twice in first set and then set himself up for victory by racing to a 4-1 lead in the second.
The 26-year-old is not seeded here despite winning the event for the last two years as organisers base their seedings on the world rankings list.
Escude now plays local favourite Richard Krajicek for a place in the last eight.
In other action, sixth seed Sebastien Grosjean beat Italian qualifier Renzo Furlan 6-3 6-4, and Sweden's Jonas Bjorkman beat Peter Wessels of the Netherlands 6-2
Buenos Aires Open
Top seeds Carlos Moya and David Nalbandian both had easy wins to reach the last eight in Buenos Aires.
Moya beat Argentine
Edgardo Massa 6-2 6-2 while second seed Nalbandian
beat Franco Squillari 6-1 6-3.
Nalbandian will now face Guillermo Coria, who beat Mariano Zabalet in three set, in
Seventh seed Nicolas Lapentti was a surprise straight-sets loser to Luis Horna of Peru.
St Jude Classic
Third seed James Blake reached the last eight in impressive style with a 6-3 6-0 win over Jiri Vanek.
He was joined in the quarter-finals by fifth seed Jan-Michael Gambill, who had to come from a set down to beat Croatian Zeljko Krajan.
But sixth seed Todd Martin was beaten in straight sets by Davide Sanguinetti, while there were also wins for Vladimir Voltchkov and Hyung-Taik Lee.