cos ' ▁head ▁coach ▁Josh ▁Mc Dan iels , ▁thinking ▁that ▁the ▁Bron cos ▁were ▁running ▁up ▁the ▁score ▁on ▁the ▁Chief s . ▁ ▁September ▁ 1 7 , ▁ 2 0 1 5 : ▁The ▁Bron cos ▁tra iled ▁ 2 4 – 1 7 ▁at ▁Ar row head ▁Stadium ▁with ▁ 2 : 2 7 ▁left , ▁when ▁quarter back ▁P ey ton ▁Mann ing ▁engine ered ▁a ▁ 1 0 - play , ▁ 8 0 - yard ▁drive , ▁cul min ating ▁in ▁a ▁game - ty ing ▁ 1 9 - yard ▁touch down ▁pass ▁to ▁wide ▁receiver ▁Em manuel ▁Sand ers ▁with ▁ 3 6 ▁seconds ▁left . ▁The ▁game ▁appeared ▁to ▁be ▁head ed ▁to ▁over time , ▁until ▁Bron cos ' ▁line back er ▁Br andon ▁Marshall ▁forced ▁Chief s ' ▁running ▁back ▁J ama al ▁Charles ▁to ▁f umble ▁on ▁the ▁next ▁play ▁from ▁sc rim m age . ▁Cor ner back ▁Brad ley ▁Rob y ▁then ▁returned ▁the ▁f umble ▁ 2 1 ▁yards ▁for ▁a ▁touch down ▁to ▁give ▁the ▁Bron cos ▁a ▁st unning ▁ 3 1 – 2 4 ▁com eb ack ▁win . ▁ ▁November ▁ 1 5 , ▁ 2 0 1 5 : ▁Two ▁months ▁after ▁the ▁a for ement ioned ▁Bron cos ' ▁com eb ack ▁win , ▁the ▁Chief s ▁exact ed ▁reven ge ▁on ▁the ▁Bron cos ▁in ▁a ▁domin ating ▁ 2 9 – 1 3 ▁win ▁at ▁Sports ▁Author ity ▁Field