Men s Division I Championship Tournament For an explanation of how the probabilities are calculated see Guide. The sum of a team s rpi + qw +1/2 sos is a key indicator of the at-large probability. The Division I Men s Lacrosse Championship is a 17-team, single-elimination tournament. Nine conferences are eligible for automatic qualification. However, the two lowest-ranked AQ teams, regardless of conference RPI, will compete in play-in games to determine the final team in the 16-team bracket. The remaining teams are selected at large. If a team has an AQ bid then its at-large probability goes to 0.00. Primary Criteria for Selecting At-Large Teams [1] Strength of Schedule (SOS) Only Top 10 based on RPI* [2] Results of Rating Pertcentage Index (RPI) [3] Record against teams ranked 1-5, 6-10, 11-20, and 21+ [4] Average RPI win (average RPI of all wins) [5] Average RPI loss (average RPI of all losses) [-] Head-to-head competition [-] Results against common opponents [-] Significant wins (defeating teams ranked higher in RPI) [-] Significant losses (defeated by teams ranked lower in RPI) [-] Location of the contests [-] Results vs. common non-D-III opponents [5] Non-division III strength of schedule