Table 1.

SARS-CoV-2 infection mitigation strategies implemented for the NCAA Men’s Basketball Tournament held March 18 – April 2, 2021 in Indianapolis, Indiana, USA

	Testing	Social Distancing and Masks
Tier 1	• Pre-Arrival: 7 consecutive daily tests prior to arrival, one of which must be RT-PCR • During Tournament: Daily testing using RT-PCR nasal swab, including day of arrival	• Placed into quarantine upon arrival. Remain until two consecutive negative tests • Each team had its own floor of the hotel to limit interaction between teams • Observe universal masking and physical distancing unless eating, practicing, or competing • Travel, meetings and meals had seating charts to aid contact tracing • Players wore Kinexon© wristbands to monitor interactions with other players during practices and games
Tier 2	• No pre-arrival requirement • Tested upon arrival using RT-PCR nasal swab • Tier 2 tested 2 × per week • Positive test resulted in individual leaving the controlled environment	• Placed into quarantine upon arrival until negative test is confirmed • Observe universal masking and physical distancing • Limited interaction with Tier 1 individuals
Tier 3	• No pre-arrival requirement • Tested upon arrival using RT-PCR nasal swab • Tier 3 tested 2 × per week • Positive test resulted in individual leaving the controlled environment	• Observe universal masking and physical distancing • Ad hoc interactions with Tier 1 individuals
Tier 4	• No requirements	• Observe universal masking and physical distancing • Restricted from interactions with Tier 1 individuals