How many GS titles do you think Sharapove will win?
Barring some serious injury I have no doubt that she will win at least 10 major titles. Her carrer has just started and she has already gotten one major under the belt. She will most likely to win 2 majors next year. She hast at least 6 to 9 years left in her and assuming she will win at least two majors each year, it's not a stretch to say more than 10.