Astros manager Brad Mills said the team will hold an intrasquad game at 9 a.m. CT on Tuesday on a back field, with left-handers J.A. Happ and Zach Duke throwing five innings apiece. The Astros are scheduled to play the Cardinals at 12:05 p.m.
Mills will manage both teams in a game that will feature umpires. The teams will have eight-man lineups.
"We're going to run it like a regular game," Mills said. "I want Dave Clark and Bobby Meacham to be first- and third-base coaches on both sides, and I want to give them signs, I want them to get signs from me and I want to give signs to the catchers. I want this to be a game-type situation for the pitchers and allow the hitters to get some at-bats."
The Astros, among other things, are still trying to sort through outfielders J.B. Shuck, Fernando Martinez, Jack Cust, Justin Ruggiano and Travis Buck for a backup role, as well as trying to get innings for fifth-starter candidates Kyle Weiland, Jordan Lyles and Duke.
"This is a little bit different than sending guys to a Minor League game or sending them to a simulated game," Mills said. "This is a step beyond that and will ramp up the intensity for everyone -- pitchers, position players and everyone else."