Question: Which tennis player won ten Grand Slam titles, Betty Stöve or Stan Smith?
Sentence (from "Stan Smith"): Stanley Roger Smith (born December 14, 1946 in Pasadena, California) is a former world No. 1 American tennis player and two-time Grand Slam singles champion who also, with his partner Bob Lutz, formed one of the most successful doubles teams of all time.
Relevant evidence: Yes