Ana Ivanovic ended her season by returning to the top 20 Sunday with a 6-2, 7-6 (5) victory over Alisa Kleybanova of Russia in the Tournament of Champions final. The 23-year-old Serb captured her second title in three weeks to move back into the top 20 for the first time in more than a year, having dropped to a low of 65 in July. Ivanovic won the first set easily, but the second was much closer, with Kleybanova's double-fault in the tiebreak providing the turning point. "The second set came down to mental strength and just believing in myself," Ivanovic said. "I managed to stay calm so I was happy to close out the match. "It's great to win another title, I'm thrilled and it's a big step for me. The last few months have been great and really exciting, and it's a good way to go into next season." Read more: http://sports.espn.go.com/sports/tennis/news/story?id=5777002