The Mets have a secret weapon for their final playoff push

Even when they ranked among the industry’s higher rollers, the Mets routinely found themselves plagued by organizational depth concerns. Or have you forgotten how they placed the fate of their 2006 season in the hands of erratic Oliver Perez (he pitched well!), turned similarly in 2007 to a gassed Tom Glavine (he didn’t) and fielded a 2008 do-or-die lineup with left fielder Nick Evans and second baseman Ramon Martinez (they posted 0-fers)?

Here comes your daily dose of irony, then: Now closer to the middle of the pack economically, the Mets don’t look so shallow anymore.

Yes, as they enjoyed their final day off of the regular season, with the three other contenders for the National League’s…