May 9, 2026, was the beginning of the 53 day time frame in which 2009.usopen.org underwent 1 uptime tests. 2009.usopen.org was found to be facing operational challenges or experiencing downtime during every assessment conducted as of July 2, 2026. 100.00% of the times 2009.usopen.org was evaluated resulted in it being unavailable, totaling 1 occurrences, most recently on May 9, 2026. The replies that were received indicated that as of July 2, 2026, no error statuses were noted. 2009.usopen.org's — seconds May 9, 2026, response contrasted its average response time of 0.001 seconds.