Daniel Vallejo and Juncheng Shang meet in the first round at Montreal on Sunday. Juncheng Shang has dropped 3 straight and sits at 5-5 over the last ten. Daniel Vallejo limps in on a 2-match losing skid, just 4 wins in 10.
Shang's 69.7% behind the first serve (against 64.8% for Vallejo) means break chances should be scarce in one direction. Vallejo needs several things to break right at once; the percentages say they usually don't.