You'll note, of course, the alarmingly sparse attendance on what looked like a fine Brooklyn afternoon for this, our baseball. As Mr. Thorn notes in a later tweet, the date of this photo appears to be Sept. 22, 1957, at which point it was widely known that the Dodgers were bound for California the following winter. Hence the visible lack of enthusiasm.
As for the then-21-year-old Drysdale, he'd toss a complete-game win over the Phillies on this day and go 17-9 with a 2.69 ERA on the season. His most legendary days were of course yet to come.