If you look at the data for the year, which
Dave Cameron did, there's several rather interesting points to be made:
The pitching staff’s 61 point difference between home and road wOBA is actually larger than the batter’s split. Away from Safeco, the Mariners are the third easiest pitching staff in the American League to hit against — at home, they are the hardest.
People worry about the psychological effect SafeCo has on young hitters, but what effect would it have on our young pitchers if the park suddenly isn't all that forgiving?
Our pitching staff right now isn't great. Felix is Felix, but after him it's a bit of a mixed bag. A guy like Vargas is tailor-made for Safeco as a left-hander susceptible to giving up flyballs/home runs. In 2012, Vargas has given up 6 HR and a .348 SLG% in 8 games at Safeco; He's allowed 19 HR and a .504 SLG% in 12 away games. What happens to his numbers right now if you move the fences in?
Millwood's home and away numbers are pretty even, but as a right hander I wouldn't expect Safeco to favor him quite as much. But then again Blake Beavan's a right handed pitcher and he's sporting a .585 SLG% away compared to .420 SLG% at home. Maybe that's because he's terrible [i.e. NOT Safeco's fault either way].
But this is the concern for me...are we trading one problem for another? What difference does it make if we bring the fences in if our hitters look better and opposing hitters look 'more' better?
Would opposing offenses see more of a benefit than our offense if the fences were moved in?
Again, from Dave Cameron...
Mariners batters at home: 9.7% BB%, 22.4% K%, .096 ISO, .249 BABIP
Mariners batters on road: 6.9% BB%, 19.7% K%, .160 ISO, .299 BABIP
Mariners opponents at home: 7.5% BB%, 21.0% K%, .120 ISO, .261 BABIP
Mariners opponents on road: 8.0% BB%, 19.1% K%, .201 ISO, .297 BABIP
So...if you focus on the ISO numbers, we'd still come up short, right? The diff. in BABIP is minimal enough that I'd say it's a wash.
As Cameron points out, the weather in Seattle has been horrible. Summer started for the rest of North America but it barely kicked in here a couple weeks ago, and this has been the worst year for offenses in Safeco. Doubles/triples are down a bit, but home runs are down dramatically...everything dies on the warning track.
TTown wrote:imo, we don't really need to wait till the end of the season for a sufficient sample size to argue one way or the other... we have seasons and seasons worth of data too look at regarding safeco's dimensions and its effects on hitters.
But this year's been far worse than other years for all offensive numbers, both Mariner and non-Mariner. So if you move the fences in know based on three months of bad results, what happens if the ball carries more with the weather being more summer-like?
Before we decide 'what' to do, we need to know 'why' we need to do it. Some people have wondered if the removal of the Alaskan Way viaduct has played a part since the wind from the Sound isn't blocked by anything anymore. Maybe before we spend money on moving the fences in we should money on a new anemometer and barometer to put on top of the roof?

The offense isn't fun to watch right now when we play home games. And when the M's played in the Kingdome and our pitching was playing Home Run Derby with the opposition, that wasn't much fun either.
Moving the fences in, at this point, just feels like an attempt to mask the problems with this team. Fences in, fences out: The team isn't that good either way. But before any changes are made I think we need to know why Safeco's playing so tight right now.