Iga Świątek survived a tight two sets with Germany's Jule Niemeier ©Getty Images

Picture gallery

Rafael Nadal came through four sets to beat Britain's Jack Draper ©Getty Images
Rafael Nadal came through four sets to beat Britain's Jack Draper ©Getty Images
Jannik Sinner making the stretch for the ball, in the Italian's win over Kyle Edmund of Britain ©Getty Images
Jannik Sinner making the stretch for the ball, in the Italian's win over Kyle Edmund of Britain ©Getty Images
Maria Sakkari from Greeece was victorious in straight sets ©Getty Images
Maria Sakkari from Greeece was victorious in straight sets ©Getty Images
Britain's Emma Raducanu shook off injury woes to win her opening match at the Australian Open ©Getty Images
Britain's Emma Raducanu shook off injury woes to win her opening match at the Australian Open ©Getty Images
Nick Kyrgios made a tearful withdrawal from the Australian Open due to injury ©Getty Images
Nick Kyrgios made a tearful withdrawal from the Australian Open due to injury ©Getty Images
Alex Molcan smashing his racquet, but the Slovakian would go on to beat Stan Wawrinka from Switzerland, the three-time Grand Slam champion ©Getty Images
Alex Molcan smashing his racquet, but the Slovakian would go on to beat Stan Wawrinka from Switzerland, the three-time Grand Slam champion ©Getty Images
Lorenzo Musetti was the biggest exit in the men's singles today, with the Italian 17th seed losing to South African Lloyd Harris ©Getty Images
Lorenzo Musetti was the biggest exit in the men's singles today, with the Italian 17th seed losing to South African Lloyd Harris ©Getty Images
Frances Tiafoe of the United States kitted out in vibrant colours on his way to a first-round victory ©Getty Images
Frances Tiafoe of the United States kitted out in vibrant colours on his way to a first-round victory ©Getty Images
Madison Keys took three sets to defeat Anna Blinkova ©Getty Images
Madison Keys took three sets to defeat Anna Blinkova ©Getty Images