# of teams with 7.5+ K/9 in May
After a monster April for strikeouts (7.93 K/9 in April 2014 vs. 7.68 in April of 2013), strikeouts have leveled off and are identical to May of 2013 (7.54). The number of teams, though, that are maintaining a high rate is still going up. The strikeout numbers might not shoot up as much as they have the last few years, but they are still mind-blowing when compared to just a few years ago.
It is still early in the season, but the increase in the number of at bats it takes to hit a home run is very noticeable. Not only is the overall rate up, but the numbers are worse in May than in April. Since last June, 3 of the 4 complete months have been above 40 and May appears to be heading that way too. If this is the new normal, it will be be a significant shift that will have a major impact on the way the game is played.