Vernon Davis, in light-hearted discussion on curling: “Anything’s possible”

49ers tight end Vernon Davis is an honorary captain for the U.S. Olympic curling team. He also caught 13 TD passes in 2013, and he’s in top form entering his ninth NFL season. In short, it’s quite possible the 30-year-old Davis could still have a strong professional football career going in, say, 2018, when the…