Peacock and his wife are expecting their first child any day now, and he may miss his next scheduled start Sunday against the Mariners while on paternity leave, Jake Kaplan of the Houston Chronicle reports.

Peacock had initially been in line to start Saturday, but the Astros have already decided to push him back a day in anticipation of the potential birth. If Peacock is unavailable for the Sunday start, Francis Martes will likely start in his place. In six appearances as a starter, Peacock is 2-1 with a 3.81 ERA, 44 strikeouts and 14 walks over 28.1 innings.