Weighted Runs Created Plus (wRC+)
wRC+ takes the statistic Runs Created and adjusts that number to account for important external factors — like ballpark or era. It’s adjusted, so a wRC+ of 100 is league average and 150 would be 50 percent above league average.
If you play your home games for the Rockies at Coors Field then it will produce a lower wRC+ than if you play at many others stadiums that are pitcher friendly.
The formula
(((wRAA per PA + league runs per PA) + (league runs per PA – ballpark factor x league runs per PA) / league wRC per plate appearance, not including pitchers)) x 100.
check out the sabermetric and analytics library at Baseball Spotlight.
Weighted Runs Created Plus- Why Use it?
Because it is a great comparison tool. It is similar to WAR and RBI in that it is a counting statistic that grows over the length of a baseball season. It is not helpful to pay attention to this number except after a season is complete. But if a player is hurt or misses some games it doesn’t penalize them for that.
Upon closer examination, it grabs a player’s wOBA and adds it with what the league average player is expected to have per plate appearance and throws that into the mix with different ballparks. This gives us a number which is multiplied by 100. The scale is listed below:
Again this is not a projection tat but rather a look at the end product for assessment of a player and his complete season.
About the author– Tom Knuppel has been writing about baseball and sports for a few decades. As an avid St. Louis Cardinals fan he began with the blog CardinalsGM. Tom is a member of the United Cardinals Bloggers and the Baseball Bloggers Alliance. He also maintains the History of Cardinals website. More recently he has been busy at KnupSolutions and the primary writer of many sports at KnupSports and adds content at Sports 2.0. Tom is a retired High School English and Speech teacher and has completed over one hundred sportsbook reviews. He also can be followed on Twitter at tknup. Feel free to contact Tom at tknuppel@gmail.com
