Oakland Athletics Non Roster Invitees 2020 (Part 1): Tanner Anderson- Has made his Debut in the MLB during his career. Is 26 years old and has played 2 seasons in his major league career. Will be 1 of 12 Pitchers that was not on the roster but invited to spring training. Ben Bracewell- Is 29 years old and has not made his MLB Debut. Has played 6 minor league seasons in his career so far. Wandisson Charles- Will be a Pitcher attending Spring Training. Is 23 years old and has an average era of 4.28 in his MILB career. Parker Dunshee- Is 25 years old and has played 3 seasons in the minors throughout his career. Has an average era of 2.94 throughout his career. Ian Gardeck- Is 29 years old and has not made his MLB Debut in his baseball career. He has played 6 seasons in the minors so far. Will be 1 of the 12 Pitchers in this years Spring Training. Brian Howard- Is 24 years old and has not made his MLB Debut. Has played 3 seasons in the minors and so far in his career has an era of 3.37. ...