Sharapova's last tournament victory came in Tokyo in September
Former world number one Maria Sharapova beat Sweden's Sofia Arvidsson to win her first title of the year at the Cellular South Cup in Memphis.
The Russian, 22, was the top seed at the lower-tier event and was looking to bounce back after losing in the first round of the Australian Open.
Sharapova broke serve four times in the final and won 81% of her service points as she saw off Arvidsson 6-2 6-1.
"I feel great," said the three-time Grand Slam champion afterwards.
"I came here for matches - I got five and I got the win, so it was a good week. I served and returned well - two things that are very important indoors.
"I also did the right things against Sofia. I worked hard after the Australian Open and little by little things are coming along."
Sharapova spent almost a year out of the game with a shoulder injury in 2008 and 2009, and her shock defeat by Maria Kirilenko in Australia had suggested the injury was still affecting her.
But she said: "I'm getting there. The more matches I play, the more confident I get. From there, things will start to fall into place and the instinct will come back a little more."
Sharapova has now won 21 titles in her career and will move up to 13 in the world from her current position of 16 in the new rankings on Monday.
Arvidsson, the 2006 Memphis champion who beat Britain's Anne Keothavong in the semi-finals on Friday, qualified for the event and was seeking the second title of her career.
In the men's semi-finals, John Isner beat Germany's Philipp Petzschner 7-5 4-6 6-3 and fellow American Sam Querrey defeated Ernests Gulbis 6-3 6-4.
Britain's Ross Hutchins and Jordan Kerr of Australia moved into the doubles final with a 7-6 (8-6) 7-6 (7-4) win over Americans Scott Lipsky and David Martin, and they will take on Isner and Kerr for the title.