as being terrible.

http://sports.yahoo.com/mlb/news?slug=jp-fangraphs091710

2. The best cut fastball in baseball last year is the second worst this year.

Amazingly, Scott Feldman’s(notes) cutter was better than even Mariano Rivera’s(notes) last season. FanGraphs uses the data captured by PitchF/X cameras to pinpoint every pitch thrown, then assigns a value to each pitch, depending on what it does with the count or when put in play. And Feldman’s cutter was worth 23.7 runs above average, nearly four more than Rivera’s and the most in the major leagues.

But Feldman has been an utter wreck – and cutter wreck – this year. Of the 110 pitchers who have thrown at least one cutter, his 11.9 runs below average ranks 109th. Rivera is back on top with 16.9 runs above average, though that is slightly misleading since he throws so many cutters. The most efficient cutter is San Diego reliever Mike Adams’.(notes) His is 3.36 runs above average per 100, compared to Rivera’s 2.5 runs.