Gerrit Cole’s Slider Went Missing Against the Red Sox
It’s possible you haven’t had the opportunity to watch every single game over the first few days of the 2017 season. For those games you’ve missed — say, Pittsburgh against Boston on Monday — you’re likely to have glanced at the box score to see how certain players performed. In the case of that Pirates-Red Sox game, you find that Andrew Benintendi hit a homer, Rick Porcello pitched six solid innings, and that the home team won by a score of 5-3.
If you looked at the line of Pittsburgh starter Gerrit Cole, you’d see a flawed five innings, with just two strikeouts, one walk, that homer to Benintendi, and all five of Boston’s runs. That’s not how Cole wanted the season to start, but the stat line isn’t quite as bad as it would appear.
Gerrit Cole has been successful in the major leagues primarily due to a great four-seam fastball. When he complemented the fastball with increased slider usage, he started dominating. There had been some talk earlier in the spring about an increased use of the changeup, as well, but when he spoke with Travis Sawchik, Cole indicated he was prioritizing his health and returning to what made him successful.
This spring Cole is not trying to re-invent himself. He has a modest goal: a healthy season. While he’s toyed with the idea of throwing more changeups the last couple of springs, he has rarely thrown the pitch in the regular season. He says he plans on continuing to be “me,” which indicates he will lean on a fastball that has averaged 95.2 mph or better in each of his first four major-league seasons — he threw it 66.7% of the time last year in line with his career (66.5%) usage — and the slider as a put-away offering.
For Cole, being “me” would suggest a combination of heavy fastball usage with the slider for whiffs. Did he stick to that plan against Boston, though? Not so much, actually. Cole did throw that fastball roughly 70% of the time, which is right in line with his established levels. As for the non-fastball offerings, however, he actually didn’t return to the slider that had made him so successful, ultimately throwing the pitch just six times.
As for explanations, we could chalk it up to efficiency. Cole threw just 76 pitches total. Through four innings, he’d thrown just 50 pitches to 13 batters. Cole wasn’t striking batters out. If hitters were putting the ball in play early in the count, then it’s possible he just arrived in fewer situations where the slider made sense. That wasn’t the case, however.