U.S. Open round-up from day six

Open championships on Saturday:

QUOTE OF THE DAY: "When you get older I think you get more patient about everything. I just want to play tennis. I had too many problems with my wrists a few years ago, but now I have the chance to play here in New York... I don't want to cry this year. I'm close, so let's finish the interview here." - An emotional Juan Martin del Potro, the 2009 winner, talked about how grateful he is to return to Flushing Meadows.

FACT OF THE DAY: Top seed Rafa Nadal has reached the fourth round or better at each of the four grand slams this year for the first time since 2011. Austria's Dominic Thiem is the only other men's player to accomplish the feat in 2017.

STATISTIC OF THE DAY: Big-serving Karolina Pliskova fired nine aces during her third-round win to take her tournament tally to 28, more than any other player in the women's draw.

PERFORMANCE OF THE DAY: Roger Federer was back to his best as he stormed past Spaniard Feliciano Lopez 6-3 6-3 7-5 into the fourth round of the U.S. Open. Following two marathon five-set encounters earlier this week, the five-time champion was in total control of the match as he finished with 32 winners, while committing just 16 unforced errors. (Reporting by Hardik Vyas in Bengaluru)