First base Many positions capture the deep holes in a mix-and-match Astros opening-day roster worth about $20 million and possessing no star power. First base is the clearest symbol. It’s the Astros’ deepest position. It’s also loaded with question marks and received little clarity during a seven-week spring training run in Kissimmee, Fla. Brett Wallace, 26, is the expected starter. He played only 66 games last year, though, and holds a career .250 batting average with 16 home runs, 66 RBIs and a .699 on-base plus slugging percentage. Those numbers – which took three seasons to compile – wouldn’t suffice on a winning baseball team. But the Astros are in [...]