Mickey Mantle hit the most home runs at the old Yankee Stadium with 266.
in 2009 New Yankee stadium
Most home runs in one stadium — 303 at Coors Field (Colorado Rockies) in 1999. I bet new Yankee Stadium will shatter that (110 to date!) THE AWNSER IS FENWAY PARK AND YANKEE STADIUM THEY ARE TIED
Mariano Rivera (230 at the original Yankee Stadium, which is not only the most at Yankee Stadium, but the most at ANY ballpark).
Mariano Rivera He has the most saves at Old Yankee Stadium (230), and he has a good chance to have the most at New Yankee Stadium.
In 2009, Yankee Stadium yielded 237 home runs, which led the major leagues..
Roger Maris in 61 I believe.