I hope the steelers never fire Tomlin....the steelers really should've beat the jaguars. but you have a multitude of great coaching decisions that lead to the loss
1. Doesnt look like they even gameplanned for the Jaguars and figured they could just show up and win. They played their same lazy 10-yards off zone which made it easy for bortles and didnt attempt to stop the run in the first half. They let the jaguars do everything they wanted to.
2. they go for it on two 4th and 1's in field goal range. Dont necessarily hate the call when you have half a yard to get and you are down. BUT when you have Leveon bell, and a near 250lb Quarterback they decide to Throw the ball 20 yards downfield on one, and run a sweep play on the other.
3. the onside kick. Somehow Tomlin thought that the % of an onside kick was higher than making Blake Bortles and an injured fournette drive the whole length of the field.
any one of those decisions is reversed, or even if they kick a field goal instead of going for it, then its a totally different game