ARLINGTON, Texas -- The Houston Astros have placed right-hander Bud Norris on the 15-day disabled list because of a sprained knee and called up lefty Dallas Keuchel, who will make his major-league debut against the Texas Rangers.
Outfielder Carlos Lee returned to the Astros' lineup Sunday after a stint on the DL because of a strained hamstring. To make room on the roster, Houston optioned Brett Wallace to Triple-A Oklahoma City.
The move with Norris is retroactive to June 12 at San Francisco. To create space for Keuchel on the 40-man roster, Houston moved left-hander Sergio Escalona from the 15-day disabled list to the 60-day DL.