Argentina's Juan Ignacio Chela has announced his retirement from professional tennis.
First round: Viktor Troicki (Serbia) beat 24-Marcel Granollers (Spain) 7-5 7-6(5) 3-6 2-6 8-6
Fourth seed Andy Murray's route to Wimbledon glory will be tricky from the beginning, with Nikolay Davydenko his first round opponent.
Germany lead Russia 1-0 in the Blue Group of the World Team Cup in Rome after Philipp Kohlschreiber beat Alex Bogomolov Jr. 6-0 6-2.
Results from the Monte Carlo Masters men's singles first round matches on Monday (prefix denotes seeding).
Miami Masters results (1)
Juan Martin del Potro will play for Argentina in their Davis Cup quarter-final at home to Croatia next month, captain Martin Jaite has said.
Twice champion Rafa Nadal coasted into round three of the Indian Wells ATP tournament with a ruthless 6-1 6-3 victory over Leonardo Mayer.
Second round: Thomaz Bellucci (Brazil) beat 20-Juergen Melzer (Austria) 6-3 6-3 19-Fernando Verdasco (Spain) beat Ryan Sweeting (U.S.) 6-2 6
Second round: 2-Nicolas Almagro (Spain) beat Benoit Paire (France) 3-6 6-3 6-4
Fifth seed Florian Mayer won through to the second round of the ATP tournament on Acapulco with a straight sets win over Facundo Bagnis.
First round: Benoit Paire (France) beat Juan Sebastian Cabal (Colombia) 7-6(3) 7-6(6)
Local hero Juan Monaco came through his opening round match at ATP Buenos Aires unscathed after opponent Filippo Volandri pulled out.
First round: 5-Juan Monaco (Argentina) beat Filippo Volandri (Italy) 6-1 3-1 (Volandri retired)
Semi-finals: 7-Carlos Berlocq (Argentina) beat 2-Juan Ignacio Chela (Argentina) 6-3 4-6 6-0
ATP World Tour Finals
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