The A's announced the addition of six players to the 60-man player pool on Wednesday ahead of MLB Summer Camp.
Infielder Eric Campbell has been added to the group who will report to Oakland at the Coliseum.
Campbell hasn't appeared in the majors since 2016 with the New York Mets, when he only hit .173 with nine RBI.
Right-handed pitchers Wandisson Charles and Miguel Romero, outfielders Luis Barrera and Brayan Buelvas and infielder Robert Puason will report to the A's alternate site.
Puason, 17, showed a lot of promise practicing in the A's facility and has speed and fluidity in his defensive capabilities.
The pool is now set at 60 players.
The A's have started to arrive for workouts, which begin on July 4 at the Coliseum and the alternate site.
A's add 17-year-old Robert Puason, five others to complete 60-man pool originally appeared on NBC Sports Bay Area