Fox wanted to give its viewers that impression when it broadcast this graphic early in Saturday's debacle against the Rangers:
Fewest Runs/Game (In May Since 1920) 2015 - 2.93 1932 - 3.16 1943 - 3.17 1929 - 3.24 1923 - 3.35But why only "since 1920"? It's not as though game scores from 1901-1919 are unknown or unavailable. In fact, Baseball Reference has runs scored/runs allowed splits by month for the Red Sox all the way back to 1901. (Here's a link to 1907's schedule and results.)
It took me only 10 minutes to check the totals for those other 19 seasons. I did a little division, and bam! Here's a complete and up-to-date list of the worst Mays for scoring runs in Red Sox history:
Fewest Runs/Game (In May In Team History) 1907 - 2.38 1906 - 2.81 2015 - 2.82 (does not include 5/31) 1914 - 3.08 1915 - 3.09Okay, it's not the worst, but you've got to go back nearly 110 years to find worse.