September sports watch guide: NFL kickoff, Kiffin vs. Ole Miss, WNBA and MLB playoffs

“Summer has come and passed.” That’s a bummer for just about everyone, save for pumpkin spice lobbyists and Richard Gere. Fear not, though — we’re about to hit the coolest stretch of the sports calendar. September is full of worthwhile watches. NFL and college football officially kick off. Men’s and women’s soccer leagues ramp up. MLB and the WNBA reach their respective playoffs. There’s U.S. Open tennis and Presidents Cup golf; the chill of an NHL puck drop and the heat of the Spanish Grand Prix. “Chad Powers” is back under center, lest we forget. This is The Athletic’s comprehensive…