Jessica Pegula looked rattled for stretches of her semifinal but escaped in three sets, setting up an all-American final against Sofia Kenin, whose confidence has grown with every match.

Madison Keys, the No. 5 seed and reigning Australian Open champion, posted a 6-3, 6-3 win over Elina Avanesyan on Friday night to reach the Miami Open third round. Keys is making her 14th appearance ...