Reigning champion Swiatek, who struggled to hold back tears after battling past Taylor Townsend in the first round, was back to her ruthless best in a 6-1, 6-3 dismantling of former world number one Pliskova in 70 minutes."For sure the first round was really emotional but today I felt like it's another day at the office, I need to be ready, be sharp," said Swiatek.The Pole, who has been inconsistent since winning her sixth Grand Slam title at the All England Club 12 months ago, will next face the Philippines' Alexandra Eala, who beat Serena Williams' first-round conqueror Maya Joint.Pliskova, who returned to the tour this year after a long-term injury absence, was no match for the third seed.The 25-year-old Swiatek has reached at least the third round on each of her past 26 Grand Slam appearances since losing in round two at the 2019 US Open.Eala, the 29th seed, became the first woman from the Philippines to reach the third round of a Grand Slam, defeating Joint 3-6, 6-2, 6-0 on a raucous Court Three."I think the atmosphere today was amazing, it was electric, respectful and all that I could have hoped for," said the 21-year-old.Last year's runner-up Amanda Anisimova came back from a break down in the third set to beat Sofia Kenin in a deciding tie-break.Former Australian Open champion Madison Keys ended home interest in the women's singles, beating Britain's Katie Swan in straight sets.