1939 – The Giants suspend 2B Burgess Whitehead, who will show up the next day in full uniform at Yankee Stadium and ask to work out. Yankee manager Joe McCarthy refuses. Whitehead rejoins the Giants a few days later, but he will be suspended again in mid-September after leaving the team.

On August 16, 1939 — 1939 – The Giants suspend 2B Burgess Whitehead, who will show up the next day in full uniform at Yankee Stadium and ask to work out. Yankee manager Joe McCarthy refuses. Whitehead rejoins the Giants a few days later, but he will be suspended again in mid-September after leaving the team.

Source:
Baseball Reference August 16
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game