Dallas waived Houston on Tuesday, Michael Gehlken of The Dallas Morning News reports.
The undrafted rookie out of Western Illinois earned a spot on the Cowboys' 53-man roster with an impressive offseason, but with Michael Gallup (knee) nearing a return, Houston was let go. Unless he's claimed by another team during the current waiver period, he'll become an unrestricted free agent, though he could find a spot on a practice squad.