A spot in the next round is at stake on Tuesday, when Rafael Jodar goes up against Thanasi Kokkinakis in the US Open first round. Rafael Jodar is 7-3 across recent matches. Thanasi Kokkinakis limps in on a 2-match losing skid, just 5 wins in 10.

There's a wide gap in our ratings on hard, and our number follows from it. Little separates them; Jodar gets the nod on the finest of margins.