Tuesday was a little different trip for the three veteran pitchers the Mets hope to rely on this season.

On an unglamorous back field at the Marlins’ spring training complex, with caged-in dugouts and porta-potties just behind them, Shaun Marcum, Pedro Feliciano and LaTroy Hawkins each made important appearances.

In a game that featured mostly minor-leaguers, Marcum pitched for the first time since the Mets’ Grapefruit League opener.

Feliciano, who is coming back from shoulder surgery and pitching with a heart monitor, faced major-league hitters in a game for the first time since 2010. It was also the first time 40-year-old Hawkins pitched in a game this spring.

Marcum pitched two innings, loading the bases and working out of it in the first inning then pitching a clean second inning. He scattered two hits, walked one and struck out one.

Most importantly, Marcum, who was signed this offseason to be the fifth starter, got through the outing feeling strong. He started just 21 games last season because of an elbow injury. He missed the entire 2009 season after having Tommy John surgery. That history made Marcum cautious when his shoulder did not feel strong in his Feb. 23 start.