The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
The USTA has not published 2027 dates - usopen.org still serves the 2026 championships - so the day comes from the ATP's 2027 calendar, "August 29" to "September 12", with the men's final on the closing Sunday.
Reports the ATP's own 2027 calendar, the only published source for the tournament's 2027 window while the USTA site still shows 2026.[1]
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.