Roddick survives at Delray Beach
Andy Roddick survived a scare in his opener at the ATP event in Delray Beach, coming from behind to beat Philipp Petzschner in three sets.
The number four seeded American, a popular figure at any tournament in the US, dropped the first set before fighting back to take the second and level the match up.
Roddick, appearing at Delray Beach for the first time since 2003, then cruised through the decider, wrapping up a 4-6 6-4 6-1 win over his German opponent.
The former world number one - now ranked 30th - moves on to a clash against Uzbek Denis Istomin in the second round.
"I served very well and to be honest I was very lucky to win it," said Isner, who served 13 aces.
"To be honest, if I lost that second set I didn’t really fancy my chances in the third because the humidity was getting to me. I was very lucky to advance."
Second seed Marin Cilic was ousted from the tournament by Jarkko Nieminen, the Finn winning 6-3 3-6 6-2, while Serbia's Viktor Troicki was also bounced out, the second seed losing 6-4 4-6 6-4 to Belgian Steve Darcis.
There were no such problems for the fifth, sixth and seventh seeds though.
And seventh seed Kevin Anderson had few problems in despatching Austin Krajicek of the US 6-1 6-4.
Other winners on a busy day of action in Florida included Croatia's Ivan Dodig, Marinko Matosevic of Australia and Xavier Malisse of Belgium.