Merida Open: Peterson makes remarkable comeback to beat McNally and reach final
The Swede will play the winner of the match between Czech Katerina Siniakova, the No 4 seed, and Italian Camila Giorgi in the final
Swede qualifier Rebecca Peterson fought back from a double break in the final set to edge out American Caty McNally and reach the final of the Merida Open at the Yucatan Country Club on Saturday.
Peterson trailed 4-0 in the final set before sweeping six games in a row to win 6-2, 6-7 (4), 6-4 in two hours and 46 minutes.
The Swede, ranked No 140, will face the winner of the second semi-final between Czech Katerina Siniakova, the No 4 seed, and Italian Camila Giorgi on Sunday for the title.
Earlier in the tournament, Peterson had defeated Argentinian Nadia Podoroska (6-3, 7-5), American Alycia Parks, the No 5 seed (6-4, 6-2) and Pole Magda Linette, the top seed (6-2, 6-4).
McNally, ranked No 92, had won against Chinese Lin Zhu, the No 3 seed (7-6 (3), 6-7 (5), 6-1), wildcard Katie Volynets (6-3, 6-0) and Australian qualifier Kimberly Birrell (6-4, 6-3) in the previous rounds.