Fourteen-year-old Madison Keys made her WTA Tour debut a memorable one, upsetting Russia's Alla Kudryavtseva 7-5, 6-4 on Monday in the opening round of The MPS Group Championships. The teen from Boca Raton, Fla., fell behind 5-2 in the first set but used powerful groundstrokes to break Kudryavtseva twice and a serve that averaged 101 mph to win the set. More...