As a follow-up to my recent article on Jonathan Sanchez: Ross of Ross and the Heckler Speak suggested that there is still hope Sanchez can become an elite arm, citing Randy Johnson as an example. Johnson, as you might know, didn't truly become "elite" until age 29, when he suddenly began to walk batters at a much lower rate. I wanted to see if there have been more pitchers, in the past, that have been able to shake their bad BB/9 habits at age 28 (or older). (I set 28 as the cut-off, because Johnson made the leap after his age-28 season, and Sanchez is currently 28.)Here are the expansion-era starters who have had a BB/9 above 4.5 from ages 20-28 (min. 600 IP): Rk Player BB/9 IP From To Age G GS ERA+ 1 Bobby Witt 6.11 1173.0 1986 1992 22-28 191 188 89 2 Jason Bere 5.85 661.1 ...

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