Charleston: Madison Keys picks up surprise loss after error-strewn display

No. 2 seed Madison Keys delivered a poor performance against 14th-seeded Anna Kalinskaya and saw her Charleston Open campaign come to an end in the round-of-16 following a 6-2 6-4 loss.Just in the first set, the reigning Australian Open champion dropped her serve three times. While the American managed to stabilize a bit in the second set, she still got broken once - and since she failed to register any breaks - the No. 2 seed ended up losing in two sets.In an hour and 20-minute contest, Keys sp