Jessica Pegula scripted an astonishing comeback “just in the nick of time” to defeat Karolina Muchova on Thursday at the US Open and reach her first Grand Slam final, where she will take on big-hitting Aryna Sabalenka for the title. 

American World No. 6 Pegula battled back from a set and a break down to record a gutsy 1-6, 6-4, 6-2 victory over her 52nd-ranked opponent from the Czech Republic.