Tag Archives: relievers

Phils’ Relievers Keeping Hitters Off-Balance With High K/9

Most baseball experts would agree that the strikeout is the worst possible result for a team batting – an out is recorded, no runs score, and no base runners advance. While ERA is the “sexy” pitching stat, it’s strikeouts-to-innings pitched that can tell you how effective a relief pitcher is at keeping runs off the board and base runners where they stand.

Rick Ingalls, a scout with the Cincinnati Reds, prefers strikeouts-to-innings pitched, or K/9, to similar metrics to gauge the efficacy of relief pitchers. “It means there must be a fastball or a slider or split-finger, whatever the pitcher throws, [and] he’s missing bats,” said Ingalls. “If a reliever has a plus fastball (velocity) and a plus slider, they have a chance to pitch out of the bullpen in the big leagues because their stuff is above average.”

Of course a team’s relievers’ K/9 metric won’t determine overall success or failure, but the Phillies relief corps has been a surprising bright spot this season. So I wanted to see where the team’s relievers stood in K/9 through March/April this season and last season, with respect to the March/April National League averages.

Source: Fangraphs

As you can see from the chart, the Phillies relievers are above average so far this year for K/9, ranking third in the NL behind the Cubs and Mets.

While not taking any credit away from the Phils, their relievers’ K/9 may be slightly inflated. They’ve pitched against two teams so far (Brewers and Padres) whose plate appearances end in a strikeout a quarter of the time (25.9% and 25.3% respectively). These numbers are also worst in the NL.

Can the Phils’ relievers keep this pace up with respect to K/9, or will it normalize to league average by the All Star break? Let me know what you think.

Does BABIP Stand For ‘Being A Baller In Philadelphia’?

I love calculating lesser-known baseball statistics just because. I know what you’re thinking: “Pump the brakes, bro, they’re just numbers.” Point taken. The truth is I never took a single statistics course in school but I know this much: while baseball statistics aren’t solely intended to predict future performance, they can provide a glimpse into developing trends.

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