The day New York Mets fans have been patiently anticipating finally came and went.

Their star prospect, outfielder Fernando Martinez donned his first New Era cap as a professional baseball player in New York’s 6-1 victory over the Washington Nationals on Tuesday night.

Martinez, 20, became the youngest rookie to start a game for the Mets since 19-year-old Jose Reyes debuted in 2003.

“Today that’s unbelievable [day] for me,” Martinez told the NY Post, “because I want all my life for that moment.”

Although Martinez went 0-3 with a pair of strikeouts against the Nationals, the Mets are confident that his performance this season in Triple-A Buffalo will serve as an indicator of things to come.

In 42 games for the Bisons, Martinez batted .291, led the team with eight home runs and knocked in 28 RBIs.

“To be here, to play in New York, to play for the Mets, to play for the people, that’s great,” Martinez told MLB.com. “That’s unbelievable for me.”

“He’s got a lot to learn,” pitcher Tim Redding told the Post. “But he’s got the skills to be here. Otherwise, he wouldn’t be here.”

“The new kid? He has a lot of bat speed; I noticed that right away,” Gary Sheffield told MLB.com. “He’s got a lot of talent.”