Lulu Sun (NZL) v [19] Elise Mertens (BEL)

Lulu Sun served first in her second round match at the US Open against Elise Mertens, but gave away a break point when she double faulted.  She couldn’t recover, being forced to leave an awkward overhead backhand volley short of the net to lose the game.  She had chances to get the break straight back…