The 30-year-old Horacek will wear No. 13. He joined the Packers practice Wednesday afternoon.
A little background on the latest roster addition:
Horacek, an Iowa State alum, is an Arena Football League veteran and is coming off an outstanding season with the AFL's Las Vegas club. He set franchise records with 127 receptions for 585 yards and 36 touchdowns, breaking his own marks set a year earlier when the team was known as New Jersey Predators. Horacek also holds the AFL's single-season record with 46 touchdowns during the 2000 season while with the Iowa Barnstormers.