Madison Keys battled past compatriot Sofia Kenin in the semi-finals of the Cincinnati Masters. Keys took a 5-2 lead in the first set, but Kenin saved a set point and won three games in a row to level at 5-5. But Keys bounced back to win the last two games to seal the set before a tiebreak. She found herself a break down twice in the second set, but rallied to win the last three games to seal her second final of the season.