Uncertainty clouds the Kansas City Chiefs' preparations for the Super Bowl as three key players' participation remains doubtful. Left guard Joe Thuney's chances of playing are considered a 'long shot' due to a pectoral injury. Additionally, backup running back Jerick McKinnon is doubtful with a groin injury, while wide receiver Kadarius Toney might not play due to a hip issue. The final decision on their participation will be seen in the upcoming Sunday's big game.