Ritchie was scratched from his scheduled start with Triple-A Gwinnett and is expected to start for Atlanta against Washington on Sunday, Grant McAuley of the Marietta Daily Journal reports.
Reynaldo Lopez was scratched from Saturday's start with Atlanta due to left knee inflammation, prompting the team to move Martin Perez up a day from Sunday's scheduled outing. Ritchie has appeared in 13 major-league games (seven starts) this season and has a 4.50 ERA, 1.41 WHIP and 49:33 K:BB over 54 innings.