SOME big guns fired their opening salvos as the William Loud Bendigo International main draw hit-off on Tuesday.
Seeded Japanese sisters Erika and Yurika Sema advanced to the second round in contrasting style.
And Azra Hadzic fought off a spirited Nives Baric to win their all-Victorian first round clash 6-4 6-3.
Hadzic got the jump, racing to a 4-1 lead in the first set, before Baric rallied in the breezy and overcast conditions.
Baric took a 2-1 lead with a break of serve early in the second, but Hadzic regathered her composure to clinch the match.
"It's pretty good for an opening match for the first round, it's always difficult to get started into a tournament," Hadzic said.
"I'm happy about how I played, Nives played a pretty good first match - she's improved a lot."
The world no. 342 will likely face a brutal second round match against defending champion Arina Rodionova.
Hadzic challenged the Russian, seeded sixth in Bendigo, in a 6-4 3-6 2-6 first round loss at Margaret River's Pro Tour event a fortnight ago.
"It was tight, but that's all over with I can just look forward to the match I have with her on Thursday and just stay positive," Hadzic said.
"It's a confidence boost to know that I got that close...but that's nothing that I can look at right now."
Meanwhile, third seed Erika Sema was pushed all the way in a 6-4 5-7 6-3 triumph over plucky Estonian Anett Kontaveit.
The world number 164 had to dig deep to hold off her 17-year-old challenger, who is ranked 70 places lower.
Yurika Sema was a model of consistency as she wore down Western Australian Jessica Moore 6-3 6-1 to move into the second round.