Originally posted on Fangraphs  |  Last updated 4/3/13

Every year we hear stories about pitchers whose fastballs don’t seem to have the same life as last year. The most talked about are typically front-line starters that rely on their fastballs. In early 2013, the name that’s being discussed the most is Yankee ace CC Sabathia. Throughout spring training, Sabathia’s velocity has been a point of concern. Coming off of elbow surgery during the offseason, Sabathia’s first regular season start did nothing to quell that concern. As The Star-Ledger’s Andy McCullough notes: Sabathia’s fastball topped out at 91.7 mph on Monday, according to Pitch f/x data from Brooks Baseball. On Opening Day in 2012, his fastball hit 94.5 mph. On Opening Day in 2011, his fastball touched 94.7 mph. (By the way, if you don’t read McCullough on a regular basis you are missing out.) In the end, McCullough notes that while it’s reasonable to be concerned, Sabathia is likely to improve as the season wears on and has good enough secondary stuff to still be very good. Overall McCullough is right, however, I think there is greater reason for concern than some may think. Sabathia was one of the top starters I flagged as at risk for further velocity loss this season based on how far his velocity declined last year. CC lost nearly 1.5 mph off of his fastball in 2013. Pitchers that lose at least 1 mph have, on average, a 39% chance of either getting injured or failing to throw at least 40 IP in the following season. They also have a 91% chance of losing further velocity the following season. Sabathia is a slow starter, both in terms of performance in velocity. However, in 2012 he simply started with a lesser fastball in April and never quite saw it recover to previous levels: It’s only one start, but Sabathia’s fastball averaged around 90 mph yesterday. That would place it more than 1mph off his April velocity in 2012. As many pitchers will have slower fastballs in April compared to their overall average from the previous season, we have to compare April velocity in year one to April velocity in year 2. When pitchers are down at least 1 mph from the previous April they are four times as likely to finish the season down at least 1 mph: So, early season velocity isn’t as much as a signal as later months in terms of a declining fastball, but it should at least raise some eyebrows. And while Sabathia does possess great secondary stuff, the key for him to pitching with a reduced fastball will be how effective he can be in and around the zone with that pitch. As I wrote last year: From 2009-2011, Sabathia generated -20.5 runs per 100 fastballs clocked at less than 92.5 mph. This year, Sabathia generated 21.9 runs per 100 fastballs clocked under 92.5–virtually all of his fastballs. Sabathia still put up solid numbers in 2012 (ERA- 81, 23.7% K%, 5.3% BB%), but his HR/FB rate jumped to 12.5%–highest in his career. Eighteen of his 22 home runs allowed came on fastballs (82%). The previous three years? Only 56%. All great pitchers must adjust to reduced velocity at some point, but those adjustments typically take time. Lossing a tick off his fastball doesn’t necessarily spell doom for CC Sabathia. But given his age, usage, and what we saw last year it is quite reasonable to be more concerned about this April decline than most.

GET THE YARDBARKER APP:
Ios_download En_app_rgb_wo_45
MORE FROM YARDBARKER

Rams owner buys massive 520,000-acre Texas ranch

Cam Newton explains why he did not dive on fumble

George Karl’s agent rips Kings, wants broadcaster reprimanded

WATCH: Popovich has funny reaction to New Hampshire results

Suns vets pull packing peanut prank on rookie Devin Booker

Teammate gives Manning final completion ball from Super Bowl

LIKE WHAT YOU SEE?
GET THE DAILY NEWSLETTER:

Report: Ole Miss Football cited in 13 of 28 department violations by NCAA

Larry Sanders to consider NBA comeback after other interests stabilize

The NCAAB power rankings

SEC begins crying foul over Jim Harbaugh’s spring break plans at Michigan

Marc Gasol reportedly out indefinitely with broken foot

Patriots waive Montee Ball despite never officially re-signing running back

WATCH: Blackhawks coach walks out of press conference

Greg McElroy: Cam Newton 'quit on his team'

Tennis umpires secretly banned over gambling issues

WATCH: Dancing Kentucky fan slides down rail, fails

Clemson LB has great response to NFL draft analyst's criticism

Former Aggies QB Kyle Allen reveals culture problems at Texas A&M

Roy Williams collapses during game vs. BC

Panthers TE Greg Olsen shaves off his playoff beard

Derek Fisher thanks Knicks in statement

Miami Heat to honor Shaq by retiring his number 32

Oakland Raiders release Nate Allen

B.J. Penn announces he will return at UFC 197

Bring back the Dunk Contest

MLB News
Delivered to your inbox
You'll also receive Yardbarker's daily Top 10, featuring the best sports stories from around the web. Customize your newsletter to get articles on your favorite sports and teams. And the best part? It's free!

By clicking "Sign Me Up", you have read and agreed to the Fox Sports Digital Privacy Policy and Terms of Use. You can opt out at any time. For more information, please see our Privacy Policy.
the YARDBARKER app
Get it now!
Ios_download En_app_rgb_wo_45

The NCAAB power rankings

Report: Kings to keep coach George Karl

Was Alain Vigneault right about NHL's lack of punishment towards Wayne Simmonds?

Report: Knicks fire coach Derek Fisher

The best and worst commercials from Super Bowl 50

Best and worst from Super Bowl 50

Six best plays from Super Bowl 50

Eli doesn't look thrilled as Peyton wins Super Bowl

Did Beyonce almost fall down during Super Bowl halftime show?

Curry to serve as drummer for Panthers

Today's Best Stuff
For Publishers
Company Info
Help
Follow Yardbarker