If Major League Baseball wants to get a 2020 season in, there still are a ton of details, both major and minor, that need to be sorted out.
The biggest, of course, surrounds when the regular season will get started and end, where teams will play, how many games, etc.
A number of plans have been discussed, including the most recent involving teams actually playing in their own home ballparks as opposed to everyone playing in Arizona and Florida, which was previously discussed.
Once those big details get sorted out, the league can then begin focusing on the smaller ones, including instant replay reviews.