Mattera had a strong debut for the Panthers on Sunday in a non-conference doubleheader against Bergen C.C., going 3-for-6 overall and hitting .500 with a team-leading four runs scored and three hits. Mattera drove in the Panther's first run in the opening game of the doubleheader on a sacrifice fly and helped the Panthers take the lead 1-0 on a solo home run in game two. He was a crucial part of the Panther's seventh-inning surge during their comeback that fell short, recording one of his two hits in the second game and scoring his team-best third run of the game.