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As the majority of you are probably aware, player pages now feature splits. As a result, were beginning a splits blitz that ought to educate our readers regarding the a variety of  Kellen Clemens Jersey usages from the newest toy. Home and road splits are some of the most often used and misused of all splits. Here I want to show why simply using career home/road splits to judge a batter isnt advisable.
A fast Search of Matt Holliday + home/road splits returns multiple results from this very chunk of the internet. For his career, Holliday has hit .351/.420/.632 at home and .284/.353/.455 on the highway in 1,860 and 1,778 plate appearances apiece. Its fair to say he has performed better at home. Holliday has spent the majority of his career  read: every season but his last  playing home games inside of Coors Field.
That factoid helps explain a few of the difference between his .442 home wOBA and .353 road wOBA, although not all. Way too often folks point out a person hitting worse on the road being an indictment on his talent, or like a doubt in the ability. In fact most players hit worse on the highway. In 2009, the typical major leaguer hit .267/.340/.430 both at home and .258/.326/.406  Tyreek Burwell Jersey on the road. The exact reasoning can be debated for eons; the point is the home field advantage exists and Holliday was no exception to the rule:
Home: 8.9% BB, 17.1% SO, .281 ISO, .378 BABIP, 20.4% HR/FB, .442 wOBAAway: 8.9% BB, 20.4% SO, .171 ISO, .329 BABIP, 12.3% HR/FB,  Joe Barksdale Jersey .353 wOBA
Leading up to his trade, people referenced the career numbers  in part being an adjustment towards the small sample sizes naturally a sociated by slicing and dicing a previously small dataset. In theory, 1,000 plate appearances over five years is worth more than 600 over three, however when dealing with past data and attempting to find the true talent degree of a person, we have to weigh the newest data the heaviest, something lost in this method.
The other big i sue was that individuals took the road numbers as gospel, applying no adjustments or considerations towards the numbers and completely ignoring obvious factors. For instance, Hollidays road numbers excluded Coors. Meanwhile almost every other National League hitter might have those numbers included in their road totals. That means Hollidays road numbers were naturally deflated just in line with the ballparks he batted in.
Just using his career numbers, nobody wouldve predicted that Holliday could  Tenny Palepoi Jersey succeed to the tune of a .412 home wOBA in another environment, or he would post a .367 road wOBA. Thats not saying that either of these numbers are his true talent levels, either. It is to say that although understanding park factors and just how particular parks can impact batters (and pitchers) is important, that merely taking a look at career home/road splits as the gospel isn't the the easy way evaluate whether a batter is a figment from the parks construction or just behaving like the majority of major leaguers.
I would recommend simply allowing the built-in park adjustments within projection systems do the math for you personally while exercising good sense in extreme cases.