San Francisco 49ers head coach Kyle Shanahan discussed new running back Brian Robinson Jr. on Sunday, saying the former Washington Commanders ' starting back would be Christian McCaffrey's backup.

It's about more than just one player. Dan Quinn explains how the recent trade reinforces the Washington Commanders' new culture of pure competition.

The 26-year-old was traded from the Washington Commanders to San Francisco on Friday, with the deal being made official on Monday, and after his first practice with his new team, spoke to reporters about his hectic weekend uprooting from the organization where he spent the previous three seasons.