Roger Federer during his match against Ruben Bemelmans. (AFP)
Rotterdam - The 36-year-old top seed, a two-time champion at the Dutch indoor event, needs to reach the semifinals to take back the number one spot from Rafael Nadal
Roger Federer delivered a crushing 6-1, 6-2 defeat of Ruben Bemelmans in just 47 minutes on Wednesday as the Swiss star moved just two wins away from becoming the sport's oldest world number one.
The 36-year-old top seed, a two-time champion at the Dutch indoor event, needs to reach the semifinals to take back the number one spot from Rafael Nadal.
With two more victories, Federer would become the oldest man by three years to hold the top position in the rankings. Federer gave no quarter as he raced to a 5-0 lead, with the out-matched Bemelmans winning his first game after 16 minutes.
The outcome was never in doubt as Federer dominated with six aces and four service breaks, winning an impressive 21 of 23 first-serve points in the demolition. The 20-time Grand Slam champion on Thursday takes on German Philipp Kohlschreiber, against whom he stands 12-0 in career meetings.
Grigor Dimitrov and David Goffin, the duo who faced off in last year's season-ending ATP Finals, both advanced with straight-sets wins. Second seed Dimitrov, who beat Belgian fourth seed Goffin in the London final last November, had to fight back in the second set to defeat Japan's Yuichi Sugita 6-4, 7-6 (7/5) in their first-round encounter.
Goffin made light work of veteran Spaniard Feliciano Lopez, cruising through 6-1, 6-3 to reach the quarterfinals.
Last weekend's Montpellier champion Lucas Pouille exited in his opening match, losing 7-5, 6-4 to Andrey Rublev.
The Russian was joined in the second round at the Ahoy Arena by Pierre-Hugues Herbert of France, who advanced after just 15 minutes when compatriot Richard Gasquet, the Montpellier finalist, retired with a groin injury trailing 3-1. Pouille lost in 93 minutes, hitting a dozen aces in defeat but losing serve four times.
The 34th-ranked Rublev owns his only career title from Umag last summer on clay. Herbert will play Russian Daniil Medvedev in the second round. Robin Haase won an all-Dutch affair over Thiemo de Bakker 6-2, 6-2.