These pitchers have been the best in the majors when the opposing team is primed to score. While Pittsburgh Pirates fans have seen just how good Jason Grilli has been over the past couple of seasons, the rest of the country may be surpised to see him at the top of this list. Grilli's wOBA has been 130 points lower when dealing with runners in scoring position. In the 56 plate appearances where he has dealt with runners 180 feet or less from home, Grilli has allowed just three hits. Only one of those was an extra base hit, a HR to Jimmy Rollins in July of last year.
Other notes: Kenley Jansen of the Dodgers holds the highest strikeout rate (47.5%) with RISP; Michael Wuertz has the highest wOBA at .511.