Stanley (ankle) missed practice Wednesday and could be out much longer, according to a CBS Sports report. Mayfield played well against the Chiefs, completing 21 of 28 passes for 321 yards. Jackson’s top two receivers, Sammy Watkins (4 catches on 8 targets, 96 yards) and Marquise Brown (6 catches on 6 targets, 69 yards) produced against the Raiders and could pose difficult matchups for Kansas City cornerbacks L’Jarius Sneed and Charvarius Ward. The Chiefs will benefit from the likely return of their top ballhawk, safety Tyrann Mathieu, who did not play in the season opener. The Ravens need to get tight end Mark Andrews going after a poor performance in Las Vegas. He caught three passes for 20 yards and dropped a ball that could have kept the Ravens moving in overtime. Jackson did not play well in the Ravens’ loss to the Chiefs last season, taking four sacks and completing just 15 of 28 passes for 97 yards.