ESTORIL, Portugal, April 15 (UPI) -- World No. 1 Roger Federer, still trying for his first tournament win in 2008, advanced to the second round Tuesday at the Estoril Open in Portugal.
Federer dropped the first set but battled back to eliminate Belgian Olivier Rochus, 4-6, 6-3, 6-2, slamming 17 aces in the match.
The Swiss star next plays Victor Hanescu of Romania.
Davydenko cruised past Austrian Jurgen Melzer, 6-3, 6-1, for his eighth straight match victory.