The New England Patriots are signing quarterback Bailey Zappe from their practice squad to the 53-man roster and releasing QB Matt Corral, NFL Network reported Saturday.Zappe will be the backup to Patriots starter Mac Jones for the season opener against the visiting Philadelphia Eagles on Sunday.Patriots coach Bill Belichick had said Friday morning that he was still deciding between the two quarterbacks. Corral did not practice Friday.New England released Zappe, 24, on Aug. 29 and, after he cleared waivers, signed him to the practice squad a day later.