Fernando Martinez

From The Met Wiki

Fernando (also known as F-Mart) was considered the Mets' top prospect since signing with the Mets at age 16, but many injuries held him back through the years.

In 2008 he played in the Futures Game.

When Daniel Murphy was banished from the Mets' outfield and most of the Mets' other outfielders suffered injuries, Martinez got the call. All indications are that it was premature. Though he's playing well defensively, in his first 77 AB's he hit just .169.