Phelps among top-flight field for Charlotte meet

(Reuters) - Michael Phelps will take his next step towards an Olympic return at the 2016 Rio Games when he headlines a top-flight field at next week's Arena Pro Swim Series event in Charlotte, USA Swimming said on Tuesday. Other competitors in the May 14-17 meet in North Carolina include Olympic gold medallists Nathan Adrian, Natalie Coughlin and Ryan Lochte. Phelps only returned to competition last month in Arizona after serving a six-month ban for a drunk driving conviction. The 18-times Olympic gold medallist, who turns 30 next month, won two events and earned three medals from three finals at the Arizona meet. In the opening-day, Phelps won the 100 meters butterfly in 52.38 seconds over long-time rival Lochte. On the second day of competition, Phelps scratched the 100m backstroke to focus on the 400m freestyle preliminary and finished 17th overall in 4:02.67. On the closing day, Phelps won the 100m freestyle in 49.72, and was third in the 200 individual medley at 2:00.01. (Reporting by Larry Fine in New York; Editing by Frank Pingue)