Bernard Tomic hopes to serve up another treat to blunt the dangerous threat his second-round foes poses at the Australian Open on Wednesday.
Tomic, the 27th seed, is ranked 74 places above Victor Estrella Burgos but knows from first-hand experience how tough the Central American is.
The two fought out three tiebreakers before Tomic prevailed en route to his second of three titles in Bogota three ago.
"He's a competitor and a fighter," Tomic said of the Dominican Republic's greatest-ever tennis export.
"This match is going to be tough."
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Tomic landed 12 aces and saved the only three break points he faced in his first-round dispatch of Thomaz Bellucci and knows serving will be key again.
"I was serving at a high percentage. Once I do that, I'm feeling pretty well on court and playing good tennis and having fun," he said.
"That's important for anyone, really, that's got a good serve to serve well on their day and you get a lot of free points easy.
"Last year I was fourth on percentage. I think Rafa (Nadal) was one, (John) Isner was (two), Nick (Kyrgios) was three and I was four on percentage first serves.
"That's my game. If my first serve is working, then everything comes smoothly."
Should Tomic win, he would play either Croatian seventh seed Marin Cilic or resurgent Brit Dan Evans on Friday for a place in the fourth round.
He is among five Australians in action on day three.
Fellow seed Nick Kyrgios is expected to advance over Italian Andreas Seppi, but teenage wildcard Alex De Minaur is an underdog against big-serving American Sam Querrey.
Not that De Minaur - with Lleyton Hewitt in his corner - doesn't give himself a chance of upsetting the 31st seed and Wimbledon third-round conqueror of Novak Djokovic.
"Everybody here is a tough match. Obviously (he has a) great serve, great forehand," said De Minaur, who saved a match point in the first round to extend his grand slam debut.
"Probably just try to get the return back and then we'll see what happens. Try and focus and play my game."
Fellow Open rookie Jaimee Fourlis is also vowing to have a dig against two-time grand slam champion Svetlana Kuznetsova, the women's eighth seed.
"I can go in with an open mind and just have a bit of fun with it," said Fourlis, the world No.417 who backed her wildcard playoff success with her maiden grand slam win on Monday.
"It's not every day a 17-year-old gets to play in the second round of a slam."
Ashleigh Barty senses an opportunity against Shelby Rogers after the American removed fourth seed Simona Halep from their section of the draw.
Another win for Barty could set up a third-round clash with Olympic champion Monica Puig.
