784:
141:
85:
132:. It is determined by multiplying the number of bases on balls allowed by nine, and dividing by the number of innings pitched. It is a measure of the bases on balls ability of a pitcher.
277:
825:
532:
688:
522:
270:
24:
643:
248:
237:
226:
799:
470:
460:
743:
673:
844:
263:
818:
151:
All but one of the top 25 single-season leaders in BB/9IP through 2018 pitched in the period of 1876-84.
302:
849:
557:
512:
404:
164:
811:
753:
733:
698:
610:
437:
758:
394:
354:
175:
738:
658:
547:
227:
Single-Season
Leaders & Records for Bases On Balls per 9 IP | Baseball-Reference.com
8:
728:
648:
605:
580:
452:
312:
286:
93:
572:
562:
497:
307:
294:
718:
668:
585:
332:
327:
322:
212:
249:
Active
Leaders & Records for Bases On Balls per 9 IP | Baseball-Reference.com
238:
Career
Leaders & Records for Bases On Balls per 9 IP | Baseball-Reference.com
653:
595:
369:
163:(0.2755 in 1880). The highest single-season modern day baseball performance was by
480:
475:
465:
442:
409:
379:
156:
152:
129:
795:
683:
633:
485:
427:
384:
342:
317:
190:
171:
160:
144:
121:
117:
838:
713:
663:
600:
542:
537:
507:
399:
389:
374:
364:
708:
703:
625:
419:
349:
194:
186:
723:
615:
432:
359:
179:
763:
678:
552:
490:
255:
140:
638:
517:
502:
783:
155:
was the all-time single-season leader (0.2308 in 1876), followed by
791:
693:
337:
125:
590:
748:
170:
The all-time career leaders in BB/9IP through 2022 were
185:
The active career leaders in BB/9IP through 2022 were
182:(0.5114), all of whom played in the 1870s and 1880s.
27:
79:
836:
222:
220:
213:Strikeout and Walk Rates | Sabermetrics Library
80:{\displaystyle BB/9IP=9\cdot {\frac {BB}{IP}}}
819:
271:
217:
826:
812:
278:
264:
139:
285:
98:bases on balls per nine innings pitched
837:
259:
778:
13:
689:Jaffe Wins Above Replacement Score
147:, all-time career leader in BB/9IP
14:
861:
782:
644:Batting average on balls in play
242:
231:
206:
1:
744:Value over replacement player
674:Fielding independent pitching
200:
798:. You can help Knowledge by
7:
116:) is the average number of
10:
866:
777:
135:
624:
571:
451:
418:
293:
749:Weighted on-base average
558:Strikeout-to-walk ratio
405:Walk-to-strikeout ratio
794:-related article is a
754:Wins Above Replacement
734:Out of zone plays made
611:Defensive indifference
438:Stolen base percentage
148:
110:walks per nine innings
81:
759:Win probability added
395:On-base plus slugging
159:(0.2355 in 1876) and
143:
82:
739:Ultimate zone rating
659:Defensive Runs Saved
25:
845:Pitching statistics
649:Batting park factor
581:Fielding percentage
313:Slugging percentage
287:Baseball statistics
94:baseball statistics
699:Power–speed number
471:Pitchers of record
308:On-base percentage
167:(0.4301 in 2005).
149:
77:
16:Baseball statistic
807:
806:
772:
771:
719:Secondary average
669:Extrapolated Runs
90:
89:
75:
857:
828:
821:
814:
786:
779:
606:Fielder's choice
370:Game-winning RBI
280:
273:
266:
257:
256:
251:
246:
240:
235:
229:
224:
215:
210:
124:) given up by a
86:
84:
83:
78:
76:
74:
66:
58:
38:
19:
18:
865:
864:
860:
859:
858:
856:
855:
854:
835:
834:
833:
832:
775:
773:
768:
620:
567:
466:Innings pitched
461:Win–loss record
447:
443:Caught stealing
414:
410:Walk percentage
303:Batting average
289:
284:
254:
247:
243:
236:
232:
225:
218:
211:
207:
203:
157:Cherokee Fisher
153:George Zettlein
138:
130:innings pitched
67:
59:
57:
34:
26:
23:
22:
17:
12:
11:
5:
863:
853:
852:
850:Baseball stubs
847:
831:
830:
823:
816:
808:
805:
804:
787:
770:
769:
767:
766:
761:
756:
751:
746:
741:
736:
731:
726:
721:
716:
711:
706:
701:
696:
691:
686:
684:Isolated Power
681:
676:
671:
666:
661:
656:
651:
646:
641:
636:
630:
628:
622:
621:
619:
618:
613:
608:
603:
598:
593:
588:
583:
577:
575:
569:
568:
566:
565:
560:
555:
550:
545:
540:
535:
530:
525:
520:
515:
510:
505:
500:
495:
494:
493:
483:
478:
473:
468:
463:
457:
455:
449:
448:
446:
445:
440:
435:
430:
424:
422:
416:
415:
413:
412:
407:
402:
397:
392:
387:
385:Sacrifice bunt
382:
377:
372:
367:
362:
357:
352:
347:
346:
345:
343:Extra-base hit
340:
335:
330:
325:
315:
310:
305:
299:
297:
291:
290:
283:
282:
275:
268:
260:
253:
252:
241:
230:
216:
204:
202:
199:
193:(1.9719), and
191:Michael Pineda
178:(0.4787), and
172:Candy Cummings
161:George Bradley
145:Candy Cummings
137:
134:
118:bases on balls
88:
87:
73:
70:
65:
62:
56:
53:
50:
47:
44:
41:
37:
33:
30:
15:
9:
6:
4:
3:
2:
862:
851:
848:
846:
843:
842:
840:
829:
824:
822:
817:
815:
810:
809:
803:
801:
797:
793:
788:
785:
781:
780:
776:
765:
762:
760:
757:
755:
752:
750:
747:
745:
742:
740:
737:
735:
732:
730:
727:
725:
722:
720:
717:
715:
714:Runs produced
712:
710:
707:
705:
702:
700:
697:
695:
692:
690:
687:
685:
682:
680:
677:
675:
672:
670:
667:
665:
664:Exit velocity
662:
660:
657:
655:
654:Catcher's ERA
652:
650:
647:
645:
642:
640:
637:
635:
634:Adjusted ERA+
632:
631:
629:
627:
623:
617:
614:
612:
609:
607:
604:
602:
601:Total chances
599:
597:
594:
592:
589:
587:
584:
582:
579:
578:
576:
574:
570:
564:
561:
559:
556:
554:
551:
549:
546:
544:
543:Complete game
541:
539:
538:Quality start
536:
534:
531:
529:
526:
524:
521:
519:
516:
514:
511:
509:
506:
504:
501:
499:
496:
492:
489:
488:
487:
484:
482:
479:
477:
474:
472:
469:
467:
464:
462:
459:
458:
456:
454:
450:
444:
441:
439:
436:
434:
431:
429:
426:
425:
423:
421:
417:
411:
408:
406:
403:
401:
400:Times on base
398:
396:
393:
391:
390:Sacrifice fly
388:
386:
383:
381:
378:
376:
373:
371:
368:
366:
363:
361:
358:
356:
353:
351:
348:
344:
341:
339:
336:
334:
331:
329:
326:
324:
321:
320:
319:
316:
314:
311:
309:
306:
304:
301:
300:
298:
296:
292:
288:
281:
276:
274:
269:
267:
262:
261:
258:
250:
245:
239:
234:
228:
223:
221:
214:
209:
205:
198:
196:
192:
188:
183:
181:
177:
173:
168:
166:
162:
158:
154:
146:
142:
133:
131:
127:
123:
119:
115:
111:
107:
103:
99:
95:
71:
68:
63:
60:
54:
51:
48:
45:
42:
39:
35:
31:
28:
21:
20:
800:expanding it
789:
774:
709:Runs created
704:Range factor
626:Sabermetrics
527:
513:Perfect game
420:Base running
350:Hits per run
244:
233:
208:
195:Hyun Jin Ryu
187:Corey Kluber
184:
169:
165:Carlos Silva
150:
113:
112:(denoted by
109:
105:
101:
97:
91:
724:Speed Score
616:Passed ball
433:Stolen base
360:Total bases
180:Al Spalding
839:Categories
764:Win Shares
679:Game score
553:Wild pitch
355:Grand slam
201:References
197:(1.9914).
189:(1.9683),
176:Tommy Bond
174:(0.4731),
639:Base runs
518:No-hitter
503:Strikeout
128:per nine
55:⋅
792:baseball
694:Pop time
573:Fielding
453:Pitching
338:Home run
548:Shutout
295:Batting
136:Leaders
126:pitcher
591:Putout
586:Assist
563:Maddux
491:Earned
333:Triple
328:Double
323:Single
120:, (or
102:BB/9IP
790:This
596:Error
122:walks
108:) or
796:stub
729:NERD
528:BB/9
523:WHIP
508:Walk
481:Hold
476:Save
380:Bunt
375:Walk
106:BB/9
533:K/9
498:ERA
486:Run
428:Run
365:RBI
318:Hit
114:W/9
104:or
92:In
841::
219:^
96:,
827:e
820:t
813:v
802:.
279:e
272:t
265:v
100:(
72:P
69:I
64:B
61:B
52:9
49:=
46:P
43:I
40:9
36:/
32:B
29:B
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
