Off the Crossbar: Cologne Alone — Borussia Dortmund's Mats Hummels gone and forgotten - Bavarian Football Works
Mats Hummels: "Borussia Dortmund a bigger team than when I was last here" | Bundesliga
Mats Hummels on what convinced him to make Borussia Dortmund return
Match Observations: Mats Hummels Leads Borussia Dortmund to Victory - Fear The Wall
Mats Hummels Claims Titles Won at Borussia Dortmund Are 'Worth More Than Anywhere Else' - Sports Illustrated
Borussia Dortmund leader Mats Hummels explains why his young vibrant teammates are so exciting - CBSSports.com
Manchester United get all-clear to sign Borussia Dortmund's Mats Hummels | Borussia Dortmund | The Guardian
Official: Borussia Dortmund sign Mats Hummels from Bayern Munich - Fear The Wall
Hummels praises Dortmund spirit after fourth straight win | ClubCall.com
Roundtable: Should Borussia Dortmund really bring back Mats Hummels?
Furious Mats Hummels slams Michael Oliver after controversial Champions League red card - Mirror Online
Dortmund's Mats Hummels vies for the ball with Piaeus' Rafik Djebbour during the Champions League match between Borussia Dortmund and Olympiakos Piraeus at Signal Iduna Park in Dortmund, Germany, 01 November 2011.