'This is not normal': US Open under fire following string of late-night finishes
US Open LIVE: Sabalenka defeats Pegula before Rybakina vs Gauff in women's semi-finals
Sabalenka meets Pegula and Rybakina faces Gauff in dream US Open semi-final line-up
Gauff fights back from brink to beat Andreeva and reach US Open final four
