Starlin Castro sunk into the seat in front of his locker and sighed. It was late on a sticky night in early July and his team, the Miami Marlins, had just surrendered a nine-run lead to lose in Washington to the Nationals, 14-12. This was the latest struggle in a season full of them for his team, and it wasn’t what the veteran second baseman expected playing for a team partly owned by legendary former New York Yankee Derek Jeter, whom he considered “a winner.”