Kuhnel was waived from Houston's 40-man roster on Tuesday, Matt Kawahara of the Houston Chronicle reports.
Kuhnel was optioned to Triple-A Sugar Land on Saturday.
The Astros selected Kuhnel's contract from Triple-A Sugar Land on Friday, Matt Kawahara of the Houston Chronicle reports.
Kuhnel signed a minor-league contract with the Astros on Monday that includes and invitation to spring training, Chandler Rome of The Athletic reports.
Kuhnel cleared waivers and was outrighted to Triple-A Sugar Land on Wednesday.
Kuhnel was designated for assignment by the Astros on Thursday, Chandler Rome of The Athletic reports.
The Astros optioned Kuhnel to Triple-A Sugar Land on Friday.
Houston recalled Kuhnel from Triple-A Sugar Land on Friday, Chandler Rome of The Athletic reports.
The Astros optioned Kuhnel to Triple-A Sugar Land on Sunday, Matt Kawahara of the Houston Chronicle reports.
Kuhnel was called up by the Astros on Saturday, Chandler Rome of The Athletic reports.