ROTTERDAM OPEN TICKETS – Rotterdam Open pro tennis indoor hard court tournament or ABN AMPRO World Tennis Tournament is played every year in Rotterdam, The Netherlands in February at the Ahoy Rotterdam arena. (11.2 - 18.2, 2013). Current Rotterdam Open single’s champion is Roger Federer. Rotterdam Open is part of the exciting APT World Tour 500 pro tennis competition series of eleven tournaments with a number of 500 rankings points to win for the events' singles champions. APT World Tour 500 events are held in Acapulco, Barcelona, Basel, Beijing, Dubai, Hamburg, Memphis, Rotterdam, Tokyo, Valencia, and Washington. The ATP World Tour 500 series (previously known as the Grand Prix Super Series, ATP International Series Gold and the Championship Series) is the third highest tier of men's tennis tournaments, after the four Grand Slam tournaments, and the ATP World Tour Masters 1000.