Largest gathering of people filling out a sports tournament bracket simultaneously

Largest gathering of people filling out a sports tournament bracket simultaneously
Who
Bing
What
298 people
Where
United States (Bellevue)
When

The largest gathering of people filling out a sports tournament bracket simultaneously is 298, achieved by Bing (USA), at the Microsoft Offices in Bellevue, Washington, USA, on 15 March 2016.

The participants, who were Microsoft employees, filled in online brackets to promote Bing's March Madness Bracket Builder website.