BREAKING: Serena wins Cincinnati title in final U.S. Open tune-up

Defending champion Serena Williams finished her last U.S.

Open tune-up in style by beating Romanian third seed Simona Halep 6-3 7-6(5) to win the Western & Southern Open on Sunday.

For the top-seeded American, the Cincinnati triumph sent a message that she is in top form as she now sets her sights on a calendar sweep of the four grand slams at the Aug. 31-Sept. 13 U.S. Open.

Halep had a solid start and broke Williams in the opening game of the first set but the American, who turns 34 next month, recovered to win the final five games of the first set.

In the final set, the opponents traded early breaks but Williams took it to another level in the tiebreak and wrapped the match up in 69 minutes.

It marked the fifth title of the year for Williams following wins at the Australian Open, in Miami and at the French Open and Wimbledon.

The win was also the 69th career title for Williams and moved her ahead of Evonne Goolagong and into fifth place on the all-time list.