Jason Heyward’s Age-30 Season Looked A Lot Like His Age-20 Season
Here are two seasons, played 10 years apart:
Year | PA | AVG | OBP | SLG | BB% | K% | ISO | wRC+ | WAR/600 |
---|---|---|---|---|---|---|---|---|---|
2010 | 623 | .277 | .393 | .456 | 14.6% | 20.5% | .179 | 134 | 4.43 |
2020 | 181 | .265 | .392 | .456 | 16.6% | 20.4% | .190 | 131 | 5.96 |
We’re used to seeing a hitter’s numbers change over the course of that many seasons — sometimes improving in some areas, often declining in others. A table like the one above suggests both an incredible sustaining of abilities and an undying faith in approach. Ironically, that is not the story of Jason Heyward, a player who has been neither consistent in his performance nor trusting of his own approach, having tinkered constantly with his swing mechanics and his goals as a hitter. What the table above omits are the nine seasons between 2010 and 2020, which showed many different versions of Heyward that add up to a hitter far less valuable than the ones that bookend them.
Year | PA | AVG | OBP | SLG | BB% | K% | ISO | wRC+ | WAR/600 |
---|---|---|---|---|---|---|---|---|---|
2010 | 623 | .277 | .393 | .456 | 14.6% | 20.5% | .179 | 134 | 4.43 |
2011-19 | 4,957 | .260 | .337 | .407 | 9.8% | 16.9% | .148 | 104 | 3.21 |
2020 | 181 | .265 | .392 | .456 | 16.6% | 20.4% | .190 | 131 | 5.96 |
To me, this table is much more interesting than the previous one, providing more information and simultaneously prompting more questions. Heyward started off as a very good hitter, then averaged merely okay performances for the next nine seasons, then suddenly reverted back to his rookie self as a 31-year-old during a pandemic year. The second table is the story I’d like to talk about. (You may be asking, “Then why show us the first table at all?” And to that I say, writing ledes is hard.)