The Reason for Jason Bay's struggles

So far in the 2011 season Jason Bay has been a shell of his former self. Many people are wondering why that is. It seems people are stumped that someone once so good can be this bad. I have a theory about his struggles. I believe that Bay is still suffering some of the after effects from his concussion suffered last year.For those who need reminding, this is what happened against the Dodgers last July, http://mlb.mlb.com/video/play.jsp?content_id=10206385. Although he remained in the game for five more innings, Bay did not return for the rest of the season. What makes me believe that Bay is still suffering from Post Concussion syndrome is that his day and night splits are drastically different. In 26 night games and 94 AB's Bay a batting average of .160, an on base percentage of .243, and slugging just .213 with 10 runs scored 15 hits 1 home run 7 RBI's 10 walks 25 strikeouts and 2 stolen bases.In just 13 day games and 46 AB's Bay has less strikeouts, about the same amou...