▁American ▁football ▁off ensive ▁lin eman ▁who ▁played ▁ten ▁seasons ▁in ▁the ▁American ▁Football ▁League ▁and ▁in ▁the ▁National ▁Football ▁League ▁for ▁the ▁Boston / New ▁England ▁Patri ots , ▁Buff alo ▁B ills , ▁Den ver ▁Bron cos , ▁and ▁the ▁Detroit ▁L ions . ▁ ▁University ▁of ▁Colorado ▁Mont ler ▁played ▁college ▁football ▁at ▁the ▁University ▁of ▁Colorado ▁where ▁he ▁was ▁All - American ▁in ▁ 1 9 6 8 . ▁ ▁Buff alo ▁B ills ▁In ▁ 1 9 7 3 , ▁his ▁fifth ▁year ▁in ▁the ▁NFL , ▁he ▁became ▁the ▁starting ▁center ▁of ▁the ▁B ills , ▁replacing ▁Rem i ▁Pr ud homme , ▁splitting ▁time ▁with ▁Bruce ▁Jar vis , ▁cent ering ▁between ▁Reg gie ▁McK en zie ▁at ▁left ▁guard ▁and ▁Hall - of - F amer ▁Joe ▁De L am ielle ure ▁at ▁right ▁guard , ▁for ▁a ▁fine ▁ 9 - 5 ▁team , ▁when ▁O . J . ▁Sim pson ▁became ▁the ▁first ▁running ▁back ▁to ▁r ush ▁for ▁over ▁ 2 , 0 0 0 ▁yards . ▁In ▁ 1 9 7 4 , ▁Mont ler ▁won ▁the ▁job ▁away ▁from ▁Jar vis , ▁starting ▁in ▁all ▁ 1 4 ▁games ▁for ▁another ▁ 9 - 5 ▁season . ▁The ▁B ills ▁lost ▁ground ▁in ▁ 1 9 7 5 ▁with ▁a ▁won - lost ▁record ▁of ▁ 8 - 6 , ▁despite ▁having ▁the ▁best ▁off ense ▁in ▁the ▁entire ▁NFL ▁with ▁ 4 2 0 ▁points ▁( 3 0 .