On March 12, 2020, MLB announced that because of the ongoing COVID-19 pandemic, the start of the regular season would be delayed by at least two weeks in addition to the remainder of spring training being cancelled.[2] Four days later, it was announced that the start of the season would be pushed back indefinitely due to the recommendation made by the CDC to restrict events of more than 50 people for eight weeks.[3] On June 23, commissioner Rob Manfred unilaterally implemented a 60-game season. Players reported to training camps on July 1 to resume spring training and prepare for a July 24 Opening Day.[4]
The Pirates finished the season with an MLB worst record of 19–41. The team's .317 winning percentage was their worst since 1952. The Pirates technically set an MLB record for the fewest games won in any official season, finishing with one fewer win than the notorious 1899 Cleveland Spiders, although the 1899 Spiders played 154 games. Because of the shortened season, and a winning percentage of .317 winning percentage being roughly equivalent to a 51-111 record in a 162-game season, the 19 wins is not generally recognized as one of baseball's worst records.
Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; H = Hits allowed; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; SO = Strikeouts