Abad was called up on Friday and arrived in New York after the game, but Houston waited until Saturday to make a corresponding move after interim manager Tony DeFrancesco earned his first career Major League win -- the Astros topped the Mets, 3-1, at Citi Field.
Fick got off to a rocky start with the Astros -- he was claimed off waivers by Houston on July 27 after the Cardinals designated him for assignment two days earlier -- allowing four earned runs over his first three appearances out of the bullpen. He strung together four outings without allowing an earned run earlier this month, but again struggled in his two most recent outings.
DeFrancesco said Fick will be eligible to -- and likely will -- rejoin the Astros when rosters expand in September.
"He has a good attitude," DeFrancesco said. "We talked to him, he's going to go down there and work on a few things. He's working out and he's willing to do whatever we want."