MELBOURNE - Jessica Pegula is oozing confidence at the Australian Open with the belief that she can beat anybody but the American third seed said being a perfectionist meant she would still pick holes in her game after Friday's thumping win. Pegula cruised into the fourth round with a 6-0 6-2 win over Marta Kostyuk after similarly impressive straight-sets victories against Aliaksandra Sasnovich and Jaqueline Cristian earlier in the week to stay on course to claim her maiden Grand Slam crown. She also dismantled top-ranked Iga Swiatek -- the favorite at the year's first Grand Slam -- and left the Pole in a flood of tears during the season-opening United Cup mixed team tournament...Keep on reading: Perfectionist Jessica Pegula says she can beat anybody