Sunday, April 19, 2009

Brewer Bat Plate Discipline

Ken Macha managed under the "patience" system that the Oakland Athletics employed, and still employ. The theory is to take pitches to get to the other teams bullpen quicker, and to also be more selective about what pitches you go after. The Brewers have been one of the most impatient teams at the plate in recent years, but they seem to have adjusted to patient style of play.

2009 compared to 2008
Player
O-Swing% Z-Swing% Swing% O-Contact% Z-Contact% Contact% Zone% F-Strike%
Ryan Braun
-8.40% -0.90% -7.00% 1.90% 0.00% 0.80% -5.90% 3.20%
Prince Fielder
-4.60% -3.30% -6.00% -6.50% -3.20% -4.70% -4.70% -3.60%
Corey Hart
-1.70% -11.50% -10.70% -17.50% 3.00% -8.90% -11.40% -5.30%
Mike Cameron
1.30% -7.30% -6.20% 21.40% 10.90% 10.70% -8.40% -15.40%
Rickie Weeks
13.90% -0.50% 7.30% -2.30% -3.90% -6.00% 3.10% -1.10%
JJ Hardy
-4.70% -6.80% -6.20% 3.20% 4.10% 4.20% -1.00% -0.70%
Jason Kendall
-0.10% 10.60% -0.20% -11.60% 2.20% -3.10% -14.00% -16.20%
Bill Hall
-2.40% -2.60% -3.80% -10.50% -7.80% -9.00% -3.40% -2.90%

As you can see from the data, the majority of Brewers are swinging less this season, led by Corey Hart's 10.7% reduction in swings. As a team they are going after fewer pitches off the plate, with the lone exception being Rickie Weeks who is chasing almost 14% more balls out of the zone. Another point of interest is Mike Cameron and Jason Kendall are both seeing fewer first pitch strikes by a margin of 15.4% and 16.2% respectively. Corey Hart is seeing fewer pitches in the zone, as is Jason Kendall -- which might explain the reduction of swings from Hart, but also does not indicate that Kendall has adjusted yet (his swing% is only down 0.2%).

Obviously it is still early in the season, but it should be interesting to see how the Brewer hitters play under Ken Macha this season. Another point of interest to watch will be if the Brewer hitters feel the pressure of a slow start and ignore the new found patient was, and revert back to the hackers that they have been in previous seasons.