Mike Tomlin's coaching statistics have been among the best in the league when it comes to results. He has the second-highest winning percentage of active head coaches with at least 50 games. The only coach above him in that statistic is Bill Belichick.
He has the fifth-most wins of any active head coach, and all those in front of him had multiple years of a head start. He does rank among the middle of active coaches with playoff wins, but all but John Harbaugh are coaches with longer tenures. He also holds the record for most consecutive seasons to start a coaching career without a losing season (12).
You can debate his records or if injuries have played into his playoff struggles in recent years, but what cannot be debated is his problems with replay challenges.
In the 2017 and 2018 seasons, Tomlin challenged calls on the field nine times and lost every single challenge. Before that run, Tomlin had a challenge record of winning 32 of 62 replays. So what happened that led to this recent 0-9 run?
We start back in October of 2017, when the Steelers lost to the Jaguars: