▁On ▁September ▁ 2 3 , ▁Cal la han ▁intercept ed ▁quarter back ▁Josh ▁Rosen ▁to ▁se al ▁a ▁ 1 6 – 1 4 ▁victory ▁against ▁the ▁Arizona ▁Card inals . ▁On ▁October ▁ 2 8 , ▁Cal la han ▁made ▁ 4 ▁tack les , ▁def lect ed ▁ 3 ▁passes ▁and ▁s ack ed ▁quarter back ▁Sam ▁D arn old ▁in ▁a ▁ 2 4 – 1 0 ▁victory ▁against ▁the ▁New ▁York ▁J ets . ▁In ▁Week ▁ 1 0 ▁against ▁the ▁Detroit ▁L ions , ▁Cal la han ▁made ▁ 5 ▁tack les ▁and ▁s ack ed ▁and ▁intercept ed ▁quarter back ▁Matthew ▁Staff ord ▁in ▁the ▁ 3 4 – 2 2 ▁win . ▁He ▁suffered ▁a ▁broken ▁foot ▁in ▁Week ▁ 1 4 ▁and ▁was ▁placed ▁on ▁injured ▁reserve ▁on ▁December ▁ 1 2 , ▁ 2 0 1 8 . ▁Cal la han ▁finished ▁the ▁season ▁with ▁ 4 5 ▁tack les , ▁ 6 ▁passes ▁def ended , ▁and ▁ 2 ▁inter ception s . ▁ ▁He ▁received ▁an ▁overall ▁grade ▁of ▁ 8 1 . 4 ▁from ▁Pro ▁Football ▁F ocus ▁in ▁ 2 0 1 8 , ▁which ▁ranked ▁as ▁the ▁ 7 th ▁highest ▁grade ▁among ▁all ▁qual ifying ▁corner ▁back s . ▁ ▁Den ver ▁Bron cos ▁▁ 2 0 1 9 ▁On ▁March ▁ 1 5 , ▁ 2 0 1 9 , ▁Cal la han ▁signed ▁a ▁three - year , ▁$ 2 1 ▁million ▁contract ▁with ▁the