League Rule Changes - Comparing player stats from different eras
The thread about Stockton = Trout has been interesting. Griffey vs Trout became a major point to discuss.
I began thinking, pretty dangerous, about other things to impact a player. Like playing the playoffs with the flu, learning your father passed away, birth of a child planned, rule changes, etc.
I'm curious how often rule changes are considered when comparing stats. Maybe RBIs go down, or up, across the entire league and the overall change should be weighted and taken into account, on a per stat basis, for comparing people like Griffey to Trout.
I just pulled off the MLB rule changes since Griffey Jr entered and I'd be surprised if the rules changes weren't used already in the discussions. Website for reference.
2008 MLB adds limited (home run calls, fair or foul) instant replay to be in effect for all games starting on Friday, August 29th.
2014 Runner attempting to score may not deviate from his direct pathway to the plate in order to initiate contact with the catcher (or other player covering home plate). Catcher cannot block plate without possession of ball.
2016 Slides on potential double plays will require that base runners must make a bona fide attempt to reach and remain on base.
2020 Pitcher must face a minimum of three batters in an appearance or pitch to the end of a half-inning.
Temporary / COVID-19 Pandemic Rules Added for Shortened Season:
Extra-inning runner on second base automatically.
The postseason expands to 16 teams.
Universal designated hitter.
2022 Draft lottery implemented to discourage tanking.
The National League officialy adopts the designated hitter.
The postseason expands to 12 teams.
2023 Bases increase in size from 15 to 18 inches.
Defensive shifts are banned.
Extra-inning runner on second base, from 2020 temporary rules, made permanant.
Pitch clocks will be used.
I haven't kept up on NBA, NHL, or USL rule changes but I know NFL surely makes big changes which must make stat comparisons more subjective. Extra games, play clocks,
Take this thread where you want to. I wanted to spark a discussion and maybe put a few more variables into the mix.