US Open: Heather Watson hopes to learn from Li Na defeat

Britain's Heather Watson says she's "learned so much" from her first-round defeat to Li Na at the US Open on Monday.

The world number 71 struggled to handle the power and accuracy of the Chinese player, eventually losing 6-2 6-3.

Speaking to BBC Radio 5 live after the match Watson admits Na had been "unbelievable" and hopes to learn from the experience.