Rice is an undrafted free agent out of UNLV. He caught 11 passes for 86 yards and one touchdown last year in his only season with the Rebels.
Rice is 5-foot-10 and 185 pounds. He previously played at UCLA before transferring to UNLV.
The Redskins also waived cornerback Blake Sailors.
AP NFL websites: www.pro32.ap.org and www.twitter.com/AP-NFL