On Sunday, in their most recent appearances, Craig Kimbrel and Fernando Rodney again avoided surrendering any extra-base hits. Rodney and Kimbrel have each allowed only four extra-base hits all season. For Rodney, that means he’s allowed an extra base hit on average about one every 17.6 innings he’s pitched this year. For Kimbrel it’s about one in every 14.6 IP. Where those numbers fit historically is described after the jump.
Here’s a list of the the highest IP per “extra-base hit surrendered” seasons in MLB history, minimum 55 IP. The 2012 seasons by Rodney and Kimbrel are in brackets to reflect that their seasons are not yet complete.
1. Jerry Bell (1972) 17.67 IP per extra-base hit surrendered
[2. Fernando Rodney (2012) 17.58]
3. Jim Johnson (2008) 17.17
4. Nolan Ryan (1981) 14.90
[5. Craig Kimbrel (2012) 14.58]
6. B.J. Ryan (2006) 14.47
7. Dale Murray (1974) 13.93
8. Heathcliff Slocumb (1996) 13.89
9. Bryan Harvey (1993) 13.80
10. Frank Linzy (1967) 13.67
The only season by a starting pitcher on this list is Nolan Ryan’s 1981. That strike-shortened season was by far Ryan’s best ERA season. He wasn’t higher in K rate than normal for him, but he kept the ball in the ballpark more effectively than in any other season of his career. Had the 1981 season run full-length, regression to the mean might have pulled him back toward his normal performance level in terms of extra-base hit prevention, but for the two-thirds of a full season that were played, he was about as effective a pitcher as he ever was in a single year.
Who the heck was Jerry Bell? I don’t remember him at all, and googling him doesn’t seem to produce much about his career beyond his stats. He is currently a coach in the amateur ranks in Tennessee, but the arc of his major league career is something of a mystery to me. His b-ref stats show that the 1972 season that tops the list above was indeed a fine one overall for the young Brewers pitcher. He began that season as a starter for the Brewers’ AAA club, but when called up to stay in June, he worked out of the bullpen quite successfully. Successful enough that in 1973 the Brewers added him to the starting rotation, and he wasn’t bad, a bit over replacement level. Then suddenly in 1974 he was back in the bullpen, and after just a few games, despite the absence of any obvious sustained failure, was sent down to AAA. And then after just one more year he was gone from organized baseball, at age 27. It’s hard to imagine a guy with his type of record today not being given more of a chance. Maybe he had some career-ending arm problem, but I haven’t found any record of it. If there are any readers out there who know any more detail on what ended Bell’s career, I’d be curious to hear.