Luke McCaffrey believed that for NFL scouts to take him seriously, he needed to top his famous brother. After Luke emerged as one of the best receivers in the American Athletic Conference at Rice in 2023, teams were still unsure of his speed or if his playmaking ability at a Group of 5 school would translate to the NFL. So Luke made it his mission to beat the marks of his older brother Christian, the 49ers’ All-Pro running back, at the NFL Combine. “When I told NFL scouts that Luke was going to be a 4.4-something in the 40-yard dash, a lot of them didn’t believe me,” recalled then-Rice wideout coach Mike Kershaw.