Eugenie Bouchard's run of poor form continued as the top seed was beaten 6-3, 6-1 by American Lauren Davis in the second round at the Family Circle Cup in Charleston on Wednesday. Davis, 21, had lost her only career meeting with Bouchard, but was in control this time against the world No 7. Davis won nine of the final 11 games of the match and broke Bouchard's serve twice in the final set to pull off the upset. Eugenie Bouchard fires down a serve during her second-round match at the Family Circle Cup . Bouchard shows her frustrations during her straight-sets defeat by Lauren Davis on Wednesday . 'I've never beaten here before, so I came out knowing I had nothing to lose,' said Davis, ranked 66th in the world. Bouchard was a semi-finalist last year but had struggled in the lead-up to the Charlston green-clay event, losing three of her last five matches to lower-ranked opponents. Davis used precise groundstrokes to keep Bouchard on her heels throughout the second set. Davis broke Bouchard's serve to love to take a 3-1 lead as the 21-year-old Canadian had a double fault, then sailed a forehand long to fall behind. Two games later, Davis hit a backhand to send back Bouchard's 102mph serve for a winner down the left sideline and a 5-1 lead. Davis hits a forehand on her way to an impressive win against the Canadian top seed . Bouchard has struggled recently, this time slumping to her fourth defeat in six matches . The match ended on Bouchard's forehand into the net, Davis waving to the cheering crowd. Bouchard said: 'As soon as it was over, definitely a bit of anger, but also kind of this confusion, slash, like quest to find what's wrong, like this kind of searching feeling that, 'OK, like I know something's off.' 'I know something's not right. So I want to find it. I was definitely a little bit slow today, overpowered. 'Usually, I'm the one dominating. So it was definitely, just, I don't know, just not good.'
Eugenie Bouchard suffered her fourth defeat in six matches .
The Canadian top seed lost to Lauren Davis at the Family Circle Cup .
World No 66 Davis won 6-3, 6-1 in the second round in Charleston .
Davis won nine of the final 11 games of the match to seal victory .
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