Madison Keys reached her first Grand Slam semi-final for four years with an impressive victory over Barbora Krejcikova at the Australian Open.
American Keys continued her strong start to the season with a 6-3 6-2 win over French Open champion Krejcikova.
Fourth seed Krejcikova struggled with the Melbourne heat and received treatment during the first set.
Keys will face either world number one Ashleigh Barty or compatriot Jessica Pegula next.
The 26-year-old is now on a 10-match unbeaten streak to start the year, having won just 11 matches across the whole of the 2021 season.