Justin Bieber | Justin Timberlake | Matt Cassel | Justin Long | Cassel | Cassel, Nord | Justin.tv | Justin Martyr | Seymour Cassel | Justin Trudeau | Justin Lin | Justin Hall | Justin | Justin Rose | Justin Hines | Justin Gray | Justin Edwards | Justin Wilson | Justin Vivian Bond | Justin Rutledge | Justin Morneau | Justin Moorhouse | Justin Green | Justin Fletcher | Justin Bieber: Never Say Never | Justin Amash | Justin Whitlock Dart | Justin Whalin | Justin Verlander | Justin Townes Earle |
Jack's younger brother, Matt Cassel, is an American football player with the Minnesota Vikings, and his other younger brother, Justin Cassel, is a minor league baseball player in the farm system of the Chicago White Sox.