Video: Alison Riske, Petra Kvitova and Simona Halep react to US Open matches

Reaction from winners and losers on the sixth day of the US Open at Flushing Meadows in New York on Saturday (31 August).

Alison Riske:(on her win over Petra Kvitova)“It was really emotional for me. It’s just really cool because I feel like I’m playing within myself. I’m not doing anything crazy. It just feels really comfortable. It’s exciting.”

Petra Kvitova:(on playing with a virus in her loss to Alison Riske)“Unfortunately I was lying in the bed yesterday and I had a fever, so I didn’t come to site yesterday. Yeah, I mean, my body didn’t help me today to move little bit. So unfortunately I tried to play, tried to fight. But, yeah, my body wouldn’t let me to fight.”

Simona Halep:(on her win over Maria Kirilenko)“Yeah. It was the best match ever for me. I played incredible today. No mistakes. Before the match I wanted to be more aggressive on court, and I did very well. She is a great player, top player. I just wanted to enjoy the match and to try my best.”