If Major League Baseball returns to play in 2020, there could be a number of different rules in place.

The owners and players have discussed the possibility of games ending in ties and changing the format of extra innings.

"The two sides agreed in their proposal this week, obtained by USA TODAY Sports, that they will adopt the minor-league rule in 2020 that every inning after the ninth will start with a runner on second base. In the postseason, games will revert back to traditional rules," writes Bob Nightengale.

"The union also wants to discuss with MLB the possibility of changing the substitution rules in extra innings, allowing players to re-enter the game among other possibilities."