The 2017 winter mini-camp began Monday for the Pittsburgh Pirates down at Pirate City in Bradenton, Florida. It's four days of voluntary workouts for players on the 40-man roster. No one from the 40-man roster is required to show up, but a many of them will be there for at least one day, while some will spend all four days there. You will also see a lot of players who were Non-Roster Invites in attendance, getting a jump on their season. There will also be some minor league players in attendance. Some of them will be invited players, while others will be getting an early start on their Spring Training.