The Barter Town crowd The Citi Field crowd came to see two men get to pitching.   And the Citi Field crowd knows the rules:   two men enter and one man leaves.   Tonight two Jons took the mound at Citi Field, Jon Niese (3-2) for the home New York Mets and Jon Garland (6-4) for the visiting San Diego Padres.   Jon Niese left the victor, tossing a 1-hit complete game shutout leading the Mets to a 3-0 win over the Padres.   Niese was only a lead off double by Chris Denorfia in the 3rd inning away from a perfect game, and retired the final 21 batters he faced.Aunty Entity knows it takes an aunty & an uncle to make a NieseThe Mets got the only run they would need in the 2nd inning.   Chris Carter led off with a double and after a Rod Barajas single Carter scored on a Jeff Francoeur single.   Rookie Ruben Tejada then etched his name in the record books by grounding into a 5-4-3 triple play to end the inning.   The Mets added 2 insurance runs in the 3rd on an RBI ground out by David Wright and an Ike Davis RBI single.Box score