Lulu Sun (NZL) and Wang Xiyu (CHN) v Tereza Mihalikova (SVK) and Olivia Nicholls (GBR)

With Lulu Sun having had to retire from her first round singles match at the US Open with what looked like a hip injury, it was good to see that she was fit enough to take part in the doubles three days later, partnering fellow left-hander Wang Xiyu.  While this was their first time together,…