Rookie Dillon Thieneman learning on the fly for a Bears defense trying to match pace with Ben Johnson's potent attack

Thieneman is among the fastest players on the team. He needs to be one of the fastest learners, too.

Source: [Yahoo Sports](https://sports.yahoo.com/nfl/article/rookie-dillon-thieneman-learning-on-the-fly-for-a-bears-defense-trying-to-match-pace-with-ben-johnsons-potent-attack-211635668.html)