Take this with a bit of skepticism due to the source — Bob Nightengale of USA Today. He’s been wrong before, and I have not seen this reported anywhere else.
But Bob reported Friday that the placed runner in extra-inning games and seven-inning doubleheaders are going to be part of MLB rules in 2021:
Major League Baseball, fearing that the pandemic could create havoc with their scheduling once again, is proposing the return of seven-inning doubleheaders and extra-inning games beginning with a runner on second base, two persons with knowledge of their discussions told USA TODAY Sports.