It seems like alot of people have noticed the low offensive output this past month. So I am basically just posting some numbers without much analysis. It does seem like April hitting helps predict what the reast of the year might be like. See Does The "High" April Slugging Percentage Mean Anything?
The next two tables show the AL & NL hitting for March/April each year from 1994-2011. Data from Baseball Reference. The AL comes first.
Now the OPS in April, AL first.