The defenses have officially caught up.

On this week's NFL Pro Reaction Show, Brett Kollmann and Trevor Sikkema examine one of the biggest league-wide trends through four weeks: a significant improvement in tackling and defensive execution. After discussing what's behind the shift, they break down the most important games from this past Sunday before wrapping up with a whiparound covering all the other results from around the NFL.

From playoff hopefuls to teams still searching for answers, we've got every major takeaway from Week 4 covered.