2 !No. 3 !No. 4 !No. 5 !No. 6 !No. 7 !No. 8 !No. 9 !No. 10 !No. 11 !No. 12 !No. 13 !No. 14 !No. 15 !No. 16 |- |- | 2018 | style="background:#B2BEB5;"|Florida | | style="background:#B2BEB5;"|Oregon State | Ole Miss | style="background:#B2BEB5;"|Arkansas | style="background:#B2BEB5;"|North Carolina | | | style="background:#B2BEB5;"|Texas Tech | Clemson | | | style="background:#B2BEB5;"|Texas | | Coastal Carolina | NC State |- | 2019 | UCLA | style="background:#B2BEB5;"|Vanderbilt | | Georgia | style="background:#B2BEB5;"|Arkansas | style="background:#B2BEB5;"|Mississippi State | style="background:#B2BEB5;"|Louisville | style="background:#B2BEB5;"|Texas Tech | | | Stanford | Ole Miss | LSU | North Carolina | | Oregon State |- | 2020 | colspan=16 align=center|No tournament due to the COVID-19 pandemic |- | 2021 | Arkansas |style="background:#B2BEB5;"|Texas |style="background:#B2BEB5;"|Tennessee |style="background:#B2BEB5;"|Vanderbilt |style="background:#B2BEB5;"|Arizona | TCU |style="background:#B2BEB5;"|Mississippi State| Texas Tech | style="background:#B2BEB5;"|Stanford| Notre Dame | Old Dominion | Ole Miss | East Carolina | | Florida | Louisiana Tech |- | 2022 | Tennessee |style="background:#B2BEB5;"|Stanford| Oregon State | Virginia Tech |style="background:#B2BEB5;"|Texas A&M|Miami (FL) |Oklahoma State |East Carolina | style="background:#B2BEB5;"|Texas| North Carolina | Southern Miss | | Florida | style="background:#B2BEB5;"|Auburn| Maryland | Georgia Southern |} Regional and Super Regional Hosts (1999-present) Starting in 1999, the NCAA expanded to a 64-team format with a regional and subsequent super regional round, with the winners of the super regionals advancing to the MCWS. The tournament begins with 16 double-elimination regional sites of four teams each; the NCAA seeds the teams 1–4 and announces the host school and venue, which is generally hosted by the highest seeded team in the region at their home stadium. The winners of each regional (16 teams) advance to the super regional round, divided into eight super regional locations, each with two teams facing off in a best-of-three series; once again, the NCAA announces the host site between rounds, and each super regional is generally hosted by the higher-seeded of the two teams. Teams must submit a bid for hosting rights. At times, the host venue has been hosted at a venue of the highest seed's choosing that is not its home field, or hosted by a team that is not the highest team in the region, due to a number of factors including scheduling conflicts at the highest team's home venue, the host school's home venue being inadequate to host according to NCAA criteria, the host school not submitting a bid, and severe weather. Italicized'' venues indicates a host venue that