What we learned as McCaffrey’s four TDs fuel 49ers’ win vs. Cardinals

BOX SCORE SANTA CLARA — Trap game, huh? The 49ers appeared to be in the moment Sunday and definitely weren't looking ahead to their Week 5 matchup against the Dallas Cowboys. The 49ers executed with precision on offense against the Arizona Cardinals and flew around on defense to jump out to an early lead. But the scrappy Cardinals hung around and made the 49ers work hard for a 35-16 victory at Levi's Stadium. Running back Christian McCaffrey scored a career-best four touchdowns and super-efficient quarterback Brock Purdy did what he has done since entering the 49ers' starting lineup last season. The 49ers (4-0) remained unbeaten heading into their Sunday night showdown against the Cowboys. Here are the major takeaways from the Week 4 victory over the Cardinals (1-3): The McCaffrey Show continues McCaffrey, coming off NFC Offensive Player of the Month honors, began October in fine form, too. McCaffrey rushed for 106 yards and three touchdowns on 20 carries, while catching seven passes for 71 yards and a touchdown. Whenever the 49ers needed anything, coach Kyle Shanahan made sure to get the ball into McCaffrey's hands. McCaffrey capped the 49ers' first drive of the game with a...