Another issue resulting from the design of the roof and the adjacent large glass panels is that, during day games when the roof is fully open, shadows cover home plate and the batters boxes, while the pitchers mound is in full sunlight. This was a safety concern for batters, and was addressed during the 2010 season, when it was determined a larger shadow would cover both home plate and the pitchers mound if only one half of the roof was opened. This tactic has since been discontinued.