Ryoma Watanabe is going into the 2019 season as new head coach of the Polish Senior Baseball National Team. He also is going to manage the U23 squad of Poland. He will be assisted by Daniel Catalan on the staff of both teams. Watanabe and Catalan are playing in the Polish Extraleague. Watanabe for KS Silesia Rybnik, Catalan for UKS Deby Osielsko.