Maria Yuryevna Sharapova is a Russian professional tennis player. A United States resident since 1994, Maria Sharapova has won 27 WTA singles titles, including four Grand Slam singles titles. She has also won the year-end WTA Tour Championships in 2004. The Women's Tennis Association has ranked Sharapova World No. 1 in singles on five separate occasions, for a total of 21 weeks. She became the world No. 1 for the first time on August 22, 2005, and regained the ranking for the fifth time on June 11, 2012. She has been in seven Grand Slam finals with a record of 4–3.