World number one Serena Williams thrashed Spain’s Carla Suarez Navarro to win her eighth Miami Open title. The 33-year-old raced to a 6-2 6-0 victory in 56 minutes to secure her third straight title at Crandon Park. The American won the final 10 games as she outclassed Suarez Navarro, who will make her top-10 debut next week. Williams said: “It feels really good to have eight under my belt. I’d like to believe the older I get, the better I get.”