Dutch wildcard entry Raemon Sluiter (pictured) celebrated his return to the ATP tour as he dispatched Spaniard Daniel Gimeno-Traver 6-2 7-5 to reach the second round of ATP Hertogenbosch.

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Sluiter, who has reversed an earlier decision to quit the sport, eased through the first set but the match looked set to go to a tiebreak in the second before Sluiter eventually broke his opponent's serve.

"This victory is very special for me. A tremendous boost," said Sluiter, formerly world ranked 46 but now down to 872.

On a rain-delayed first day, top seed Fernando Verdasco, world number eight and Spain's Davis Cup hero last year, also progressed, beating compatriot Pablo Andujar 6-3 7-5.

In an exhibition match, former world number one Kim Clijsters made short work of local hero Michaella Krajicek, winning 6-1 6-3.

The Belgian retired in 2007 but announced her comeback in March and is due to return competitively in August.