Saturday's Cincinnati round of 64 pits Alexander Blockx against Mariano Navone on hard. Alexander Blockx is searching for form, having lost 2 in a row (5 of the last 10). Mariano Navone is 5-5 across recent matches.
Blockx's 74.2% behind the first serve (against 62.4% for Navone) means break chances should be scarce in one direction. A tiebreak or two would surprise nobody, with Blockx fractionally more likely to land the big points.