Djokovic, Murray win; Venus loses

Venus Williams’ recent resurgence stalled when she lost in the quarterfinals of the Miami Open in Key Biscayne, Fla., to 12th-seeded Carla Suarez Navarro , 0-6, 6-1, 7-5. The 34-year-old Williams was broken six times in the final two sets and double-faulted twice in the final game.

Novak Djokovic rallied from a break down in the second set and beat Alexandr Dolgopolov , 6-7 (3), 7-5, 6-0 in the fourth round of the tournament.

The No. 1-seeded Djokovic’s most likely opponent in the final would be No. 3 Andy Murray , who became the ninth active man to win 500 matches, beating Kevin Anderson , 6-4, 3-6, 6-3.

No. 22 John Isner , the last American in the men’s draw, reached the quarterfinals by outlasting No. 5 Milos Raonic in a serving duel, 6-7 (3), 7-6 (6), 7-6 (5). Isner, who has yet to be broken in three matches, had 22 aces and a top speed of 143 mph.