(AP Photo/Paul J. Bereswill)Given the rash of Met injuries, it is especially difficult to imagine where in the world they would be without Gary Sheffield. The Sheffield that is 40 years old.   The Sheffield that the Detroit Tigers wanted to be rid of so badly, they paid him $14,000,000 to go away. The Sheffield who last season in 482 plate appearances had a line of .225 BA/ .326 OBP/ .400 SLG.Met General Manager Omar Minaya took a great deal of heat for bringing in that Gary Sheffield.   His arrival would disrupt the budding chemistry of the team in it's first full year under manager Jerry Manuel. He could no longer play the outfield.   He would never adjust to a bench role, or worse he would take playing time away from Ryan Church and Daniel Murphy. The only thing the detractors couldn't say was that Sheffield would hint that his manager was racist.A glance at the MLB standings today shows the Mets 1/2 game out of first place.   I shudder to think where in the world they'd be without Gary Sheffield.carmensandiego