UNITED NEWS INTERNATIONAL (UNI) — Fresh off his Australian Open victory, Swiss tennis legend Roger Federer hopes to seize the opportunity to reclaim the No. 1 ATP ranking.

Federer snagged a last-minute wild card to enter the upcoming World Tennis Tournament in the Dutch city of Rotterdam.

Currently ranked No. 2, Federer would overtake Rafael Nadal for the top spot if he can make it to the semifinals.

The 20-time Grand Slam champion hasn’t stood atop the world rankings in more than five years. Should he do it again, however, Federer would easily become the oldest No. 1 in ATP history.

Federer’s 36 — three years older than American tennis great Andre Agassi was when he last held the No. 1 ranking in men’s tennis.

The Rotterdam tournament starts Feb. 12.

Rafa Nadal, meanwhile, isn’t expected to return to action until the ATP World Tour stops in Acapulco, Mexico later this month.