Thursday's Segovia round of 16 pits Gonzalo Villanueva against Matteo Martineau on hard. Matteo Martineau is 4-6 across recent matches. Gonzalo Villanueva is 7-3 across recent matches.
There is no history here: this is their first tour-level meeting.
Martineau's 71.6% behind the first serve (against 63.2% for Villanueva) means break chances should be scarce in one direction. This one is close to a coin flip, and the lean toward Martineau is exactly that — a lean.