Serena Williams made a triumphant return to professional tennis after a four-year absence by winning a doubles match at the Queen's Club in London.Partnering with teenager Victoria Mboko, the former champion defeated Nicole Melichar-Martinez and Erin Routliffe in straight sets.Williams demonstrated her vintage power with serves reaching 120 miles per hour during the victory on the grass courts.The athlete is currently evaluating her future schedule, including potential participation at Wimbledon later this month.