RESEARCH: Tommy John surgery and pitching performance

Could Adam Wainwright be the poster boy for Tommy John (TJ) surgery?

He had the surgery in February, 2011 and returned to the Cardinals’ rotation in April, 2012, 404 days later.

The results were very positive:

           Two yrs    Two yrs         
           before     since
           surgery    surgery
=============================
xERA        3.20       3.15
WHIP        1.13       1.15
Dom (K/9)   8.3        8.2
Ctl (K/BB)  3.5        4.8

Wainwright was the same pitcher, with better Command. And that’s not all:

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  For more information about the terms used in this article, see our Glossary Primer.