Sharapova??won a hard-fought final against Spain???s Carla Suarez Navarro, losing the first set and winning a very tight second, before romping through the decider to triumph 4-6 7-5 6-1.
In sweltering conditions at the Foro Italico, 10th seed Suarez Navarro began well in her quest for just the second title of her career, breaking the World No 3 and going on to take set one.
And she fought hard in the second set, recovering from 1-3 and 3-5 to level at 5-5, before Sharapova won two games in a row to level the match.
Suarez Navarro broke to start set three but that proved to be the end of her resistance, Sharapova smacking a backhand return past her tiring opponent to break back immediately.
And the 28-year-old went on to reel off the next five games in a row, wrapping up victory after over two and a half hours with her 39th winner of the day
It was a 35th WTA tour title for Sharapova, who will climb to second in the world rankings next week.