Marlins catcher Ellis is a backup with several major roles
JUPITER, Fla. — Tom Koehler already understands why A.J. Ellis is considered a pitcher’s catcher even though they’ve only been Marlins teammates for a week. “He seems like he’s a guy who’s really going to push us,” said Koehler, who went 9-13 with a 4.33 ERA last season. “During my live (bullpen) session yesterday he