Swiatek suffered her worst clay court defeat in six years, losing 11 straight games against the American during the match
The world number two admitted ‘everything collapsed’ in her clash against Gauff, who will play her first Madrid Open final against Aryna Sabalenka.
Swiatek, who held the Madrid Open trophy aloft last year, could now fall below Gauff in the WTA rankings following the defeat, should the former US Open champion go on to win the tournament.
Former British tennis player Colin Fleming spoke after the match on Swiatek’s out-of-character performance.