Big K-BB% and the projections

This week, the focus is on the early leaders in K%-BB% and their early success, followed by a review of their current projections to see whether their elite status is sustainable over the long run. We start with the four highest K%-BB% led by the insane numbers of San Diego Padres closer Mason Miller (RHP, SD) and his 73% K%-BB%: 

		SV	HD	IP	xERA	WHIP	K%	K-BB%	HR/9
Miller, Mason	SD	6	0	9.1	0.62	0.21	77%	73%	0.0
Iglesias, Raisel	ATL	4	0	7.2	2.27	0.52	39%	39%	0.0
Duran, Jhoan	PHI	5	0	6.2	1.84	0.75	33%	33%	0.0
Fisher, Braydon	TOR	0	3	9.2	1.89	0.72	36%	33%	1.0
Hoffman, Jeff	TOR	2	0	8.1	1.97	1.80	44%	32%	1.1

Miller has a 0.62 xERA, 0.21 WHIP, 77% K%, and 73% K%-BB%. No one has ever sustained that across a season, and there is no reason to expect it now. However, Miller is dwarfing some other...

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