Aggressive Bernard Tomic powers through Sydney first round

THE aggressive version of the enigma that is Bernard Tomic took barely more than 40 minutes to despatch overwhelmed qualifier Igor Sijsling 6-1 6-1 to begin the quest for his second Sydney International title.

On the end of a similarly lopsided scoreline himself when bundled out of last week's Brisbane International by world No.5 Kei Nishikori, the 22-year-old Queenslander blasted the Dutchman off the court with his power game.

After the loss to Nishikori, Tomic said he wanted to come out and play aggressively from the first point next time.

He lived up to that promise against Sijsling, and then said: "Hopefully my next round I can do even better".

He may have to, his second-round opponent is tournament second seed, German Philipp Kohlschreiber.

Wildcard Juan Martin del Potro, who beat Tomic in last year's final, was overcome with emotion after returning from 11 months on the sidelines with a wrist injury to beat Ukrainian Sergiy Stakhovsky 6-3 7-6.

The Argentinean, who raised his arms in jubilation after the win, will face tournament top seed, Italy's Fabio Fognini, in the second round.

Meanwhile, Aussie Sam Stosur was bundled out by the Czech Republic's Barbora Zahlavova Strycova 7-6 (7-5) 6-3, while American Nicole Gibbs, who received a lucky call-up when top seed Simona Halep pulled out with a stomach illness, was also hastily farewelled, 6-0 6-0, by another by Czech, Karolina Pliskova.