Pitches = Number of pitches thrown
Strikes = Seriously?
P/O = Pitches per out
P/PA = Pitches per plate appearance
PA/K = Plate appearances per strikeout
Astros Pitcher Efficiency
A couple of things here. While Bud Norris has the highest pitch/plate appearance ratio, he has the lowest plate appearance/strikeout ratio. Wandy has the lowest pitch per plate appearance ratio, but isn't striking anybody out.