Dalvin Cook has signed with the Dallas Cowboys' practice squad after a lackluster performance with the Jets and Ravens last season. While he won't start on the active roster, there is potential for him to be activated given the Cowboys' weak backfield. Cook had also been exploring opportunities with other teams, including a potential visit with the Colts.

• Dalvin Cook joins a struggling backfield in Dallas, which may provide him with more opportunities.
• Cook's past performance raises questions about his potential impact on the Cowboys.