Monday's US Open first round pits Kimberly Birrell against Petra Marcinko on hard. Kimberly Birrell limps in on a 4-match losing skid, just 2 wins in 10. Petra Marcinko is searching for form, having lost 3 in a row (5 of the last 10).
Kimberly Birrell is clearly higher-rated on hard — our number puts Birrell around 53%. Little separates them; Birrell gets the nod on the finest of margins.