Look up and down the Houston Astros roster and it’s difficult to imagine them getting any better. They’re on pace to win 105 games, which is four more than even last year. But it’s possible. Though their pitching staff is the best in the league and maybe one of the best ever, their offense has been more middling. And it may start at the top with George Springer. So far Springer has registered 1.6 fWAR and a 113 wRC+ in 97 games. While being 13% better than league average is pretty good, it’s not quite what you’d expect from him….