Greg Nappo proved he was a little too good for the short-season New York/Penn League. After striking out 10 of the 15 batters he faced in a July 4 start for Jamestown (N.Y.), he pitched five perfect innings in his next start (he was removed after reaching his pitch count both games).

On Wednesday, Nappo was promoted to low Class A Greensboro (N.C.) of the South Atlantic League.

Nappo, a LHP, was the No. 2 starter at UConn this spring and an 18th-round pick of the Marlins in June.