Roger Federer beat Argentine Juan Ignacio Londero 6-3, 6-4 on Tuesday to win a rain-interrupted opening match at the ATP Cincinnati Masters.
The Swiss, a seven-time champion in Ohio, last played a month ago when he lost the Wimbledon final to Novak Djokovic.
But he showed no sign of rust and after the weather forced a one-hour halt with Federer up a set and level at 2-all in the second the 20-time Grand Slam champion came back out to finish his job on a second match point.
