HOUSTON —
Espada added that the Astros don’t yet know the severity of the injury and should know more after additional testing.
Espada said he would not name a closer to fill in while Hader is out but would use his relievers based on matchups.
“I feel good about all those guys,” Espada said.
Hader, who is in his second season in Houston, is 6-2 with a 2.05 ERA and is tied for third in the majors with 28 saves in 48 appearances this season.
To take his spot on the roster, the AL West-leading Astros reinstated right-hander Shawn Dubin from the 15-day injured list. They also designated right-hander Hector Neris for assignment and recalled left-hander Colton Gordon from Triple-A Sugar Land.
