The Deets is a weekday morning dose of commentary — delivered at 7 a.m. — from sports columnist Dieter Kurtenbach that wraps up everything important in the world of sports and looks forward to another crazy day ahead.

The Big Thing

Kyle Shanahan’s offense is synonymous with 21 personnel — formations two running backs and a tight end.

But going into the 2020 season, he might need to reinvent himself and the 49ers.