The Arizona Cardinals added Roy Mbaeteka off waivers, filling the vacancy created when Valentin Senn landed on injured reserve with a neck issue. Mbaeteka, a towering 6-8, 330-pound tackle from Nigeria, comes through NFL’s International Player Pathway system and has spent time with the Giants, Bears and Browns. With Senn out, Arizona exposed a roster spot that could become a 17th practice-squad slot if Mbaeteka clears waivers. Expect limited work this week, with a push for action likely in the preseason finale against Las Vegas after the Broncos game.