Rotterdam, The Netherlands (SportsNetwork.com) - No. 2 seed Milos Raonic was a hard-fought opening-round winner Tuesday at the $1.825 million ABN AMRO World Tennis Tournament.

The Canadian slugger swatted 19 aces and overcame Russian qualifier Andrey Kuznetsov 6-7 (5-7), 6-1, 7-5 at Ahoy Rotterdam.

Meanwhile, eighth-seeded Frenchman Gilles Simon grounded Portuguese Joao Sousa 5-7, 6-3, 6-2 on Day 2.

Also on Tuesday, Ukrainian Sergiy Stakhovsky held off Spaniard Marcel Granollers 6-2, 7-6 (9-7), Canadian Vasek Pospisil doused German Philipp Kohlschreiber 6-4, 6-2 and Jeremy Chardy was tied with fellow Frenchman Julien Benneteau 3-3 in the first set when the 2013 Rotterdam runner-up Benneteau retired.

The 2015 Rotterdam champ will earn $405,000.