This afternoon, the Mets begin a three-game series with the arch-rival Philadelphia Phillies at Citi Field.The Phillies have struggled more than people thought they would this season. Coming into today's game, they are in last place in the National League East, five games back of Washington.The Phillies have really struggled at the plate, and are one game above .500 only because of Hunter Pence and Carlos Ruiz, who are both having career years at the plate. Past them, however, their lineup has been devastated by age and injuries.Here are the pitching matchups:Game 1: Today 1:10Jonathon Niese (3-2, 4.29 ERA) vs. Cole Hamels (7-1, 2.17 ERA)Game 2: Tuesday 7:10Jeremy Hefner (0-2, 6.17 ERA) vs. Joe Blanton (4-4, 4.55 ERA)Game 3: Wednesday 7:Dillon Gee (4-3, 4.92 ERA vs. Cliff Lee (0-2, 2.82 ERA)More notes...-- The Mets are in second place! They are just 2.5 games back of the Nationals, who before this past sweep of the Braves, looked like they were starting to fade. Oh, and the Braves have lost seven in a row...-- I'm curious to see how Jeremy Hefner bounces back from his last start against the Padres, in which he left after giving up six runs in 3.2 innings.-- The back end of the bullpen has been great for the Phillies so far this season. Antonio Bastardo has a 1.98 ERA and 1.10 WHIP, while Jonathan Paplebon is 14 for 14 in save chances this season. Just something to keep in mind late in games.-- Happy Memorial Day everyone!