A perennial powerhouse, the San Francisco 49ers are expected to again be formidable in 2024. The Niners boast one of the NFL's most potent offenses thanks to offensive mastermind Kyle Shanahan.The clear-cut stud in the San Fran backfield is superstar RB Christian McCaffrey. However, McCaffrey has been sidelined for the majority of training camp with a calf strain.Who is the RB2 in San Francisco? Is Elijah Mitchell out for the season? Will Christian McCaffrey play in Week 1? Is Jordan Mason his ...