The Chicago Tribune (March 31) -- The Chicago Tribune (March 31) -- It's hard to know what baseball at Wrigley Field will look and whether the Wrigley renovations will change the game itself. "It could conceivably have an effect," Alan M. Nathan, an Illinois professor emeritus and a researcher of baseball physics, says of Wrigley's new jumbo-sized video board. "Whether or not that effect will carry in a positive or negative direction remains to be seen."