While MLB has yet to announce the order of selections for the 2021 draft, at one point it was viewed as highly likely that it would be determined by the final 2020 standings. 

According to the March agreement between MLB and the players association, commissioner Rob Manfred has the right to modify the draft order rather than let the 60-game 2020 regular season determine it as usual. Here's the relevant passage: 

In the event that each Club plays less than 81 regular season games in 2020, the Office of the Commissioner shall have the right, after conferring in good faith with the MLBPA, to modify the Draft order.