From The Met Wiki
|Age: 20 (born October 11, 1989)|
|Position: Starting Pitcher|
|Bats: Right Throws: Right|
|Acquired: Amateur draft|
|Contract: Major League minimum|
Mejia made the opening day roster as a reliever. Many felt that given that this held back his development of his secondary pitches.
He made his first major league start at Wrigley Field on September 4,2010, throwing to Mike Nickeas, who made his Mets debut in that game. Mejia gave up 4 runs in 5 innings and took the loss. He gave up 6 runs in 4 innings in his next start, but did get his first major league hit, lining an 0-1 pitch from Phillies pitcher Roy Halladay into right field on September 10,2010 in the mets 8-4 loss to the phillies.