Most of MLB’s rule changes from last year’s COVID-19 shortened season have remained in effect this year. On the downside, the powers-that-be nixed the universal DH in 2021. Too bad. Also too bad they didn’t cut that rule that puts a runner on second base to start each extra inning.
Moving along to roster construction, the rules used to be quite different. Up until two years ago, MLB teams could drastically increase the size of their active roster towards the end of the year. Remember when teams were allowed as many as 15 extra players for the final month of the season?