Christian Hummels is one of the most important defenders in football today, and he has made a significant impact on Borussia Dortmund's defensive strategy.

Hummels joined Dortmund in 2013 from Schalke 04, and he quickly established himself as a key player for the team. He is known for his exceptional defensive skills and aerial ability, which have helped Dortmund to maintain a high defensive discipline throughout their campaigns.

One of Hummels' most notable contributions to Dortmund's defense is his ability to read the game well and anticipate opponents' moves. This has allowed him to make crucial interceptions and clearances, helping to keep the ball away from dangerous areas of the pitch.

In addition to his physicality and reading of the game, Hummels also possesses excellent communication skills with his teammates. He works closely with his fellow defenders and midfielders to coordinate their efforts and ensure that the backline remains solid throughout matches.

Hummels' influence on Dortmund's defensive strategy has been significant. His leadership and experience have helped to inspire the rest of the team, and his contributions have played a crucial role in the team's success over the years. Hummels' dedication to the sport and his commitment to improving his game have also earned him widespread admiration among fans and peers alike.

Overall, Christian Hummels is a true legend of the game, and his impact on Borussia Dortmund's defensive strategy cannot be overstated. As he continues to play at the highest level, it will be exciting to see what new strategies and tactics he will develop to help his team stay at the top of European football.