New York Yankee Closer Mariano Rivera has been sending fans to the exit gates for a decade, finishing off Yankee victories at an astonishing clip. Now he's offering them a place to go next. The pitcher is opening Mo's New York Grill in New Rochelle, N.Y., designed and developed by Branded Concept Development. The restaurant, however, will have a tad less capacity than Yankee Stadium, seating 110 guests at a time.