Coming to the MoonDogs from New Haven, Conn.  and Yale University, Rob Cerfolio will bring another weapon to Mankato&rsquos pitching arsenal.  Cerfolio is coming off of a successful junior season out east, striking out 29 batters and compiling a 2.94 earned run average through 49.0 innings pitched, which is third on the Yale roster.  Cerfolio is also error free on the season, with a perfect 1.00 fielding percentage.  The Birmingham, Ala. native is majoring in history of science and history of medicine.