The Pittsburgh Pirates bullpen combined for the third best bullpen ERA last year, which is especially impressive given they finished 27th in strikeout percentage. That their relief corps finished with a sub-3.00 ERA was largely due to their 78.3% left on-base percentage — which ranked in the top five in baseball. The pen of the Bucs managed to post a second best .272 BABIP which of course helped keep the LOB% high and the ERA down. Curiously the Pirates relief corps maintained a low BABIP while also posting the highest ground ball rate in the league last year, 52.0%. The fantasy talent dries up quickly after the closer and setup men, though there are holds to be had if one can find strikeouts elsewhere.
The closer
Jason Grilli
No surprise here as Grilli has been spectacular for the past several seasons. Rather than fitting in with the rest of the bullpen by getting ground outs and a few strikeouts, Grilli is the opposite. He 14.5% swinging strike rate last year led to a 36.6% strikeout rate, nearly a career high mark. Grilli does a superb job of keeping the ball in the yard, especially considering his tendency to record plenty of fly outs. His 33.0% GB% was tied for fourth lowest of any reliever with at least 10 saves, getting more grounders than only Ernesto Frieri, Huston Street, and Joe Nathan. On top of his home run prevention, last year Grilli’s 6.4% walk rate was the lowest single season mark of his career. Despite this being his age-37 season, Grilli still has plenty of zip on his fastball — it averaged over 93 mph last year — and he effectively mixes off-speed pitches to induce whiffs. While he did miss time last season due to a forearm strain, Grilli managed to come back in September and even finish the season as the closer.
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