After failing to make the Raiders' 53-man roster at the end of training camp, Guyton signed with Las Vegas on the practice squad Wednesday.
Guyton spent the first five years of his NFL career with the Chargers, during which he caught seven touchdowns across 46 regular-season outings. He spent the first two weeks of training camp on the active/PUP list with an undisclosed injury, but he was able to suit up for the Raiders' three preseason games, during which he registered six catches (on seven targets) for 51 yards. Guyton should get a call-up if any of the Raiders' wide receivers on the active roster were to miss time.