Escalona sprained his left ankle when he tripped over a glove in the outfield shagging flies before Friday's 4-3 loss. He was carted off the field, and even though X-rays were negative, the ankle remains swollen. Escalona is currently using crutches to get around.
Cedeno pitched for Double-A Corpus Christi and Triple-A Oklahoma City and posted a combined 7-9 record with a 4.38 ERA. He started and threw out of the bullpen, and Astros manager Brad Mills said Cedeno will come on in relief and could be a lefty specialist at first.
"What a better time [than] now to take a look at the guy, with Escalona going down," Mills said. "It's good to have a second lefty, especially when you expand the rosters like this."
Mills and the Astros said that Cedeno will arrive Sunday for the final game of the Washington series. The 25-year-old Cedeno has never pitched in the Major Leagues.
Escalona wasn't optimistic about returning in 2011 even before the Astros informed the media he'd be going on the 60-day disabled list.
"It's hurting me a little bit, [but] it's getting better," he said.
Said Mills: "It was going to be hard for him to come back and pitch. They felt he was going to be out at least 10 days with this ankle thing."