Each of the 16 regional sites has its own color code. For example, the geographically compact University of Florida region, hosted by the No. 5 seed Gators and also featuring Central Florida, South Florida, and Florida Gulf Coast, depicts the teams in blue boxes with orange letters. Two of the most spread-out regions are:
- The one hosted by top-seed Cal, whose visitors include Arkansas, Iona (NY), and Boston University. These teams are shown in dark-blue boxes with yellow lettering.
- The University of Washington (No. 16 seed) region, whose participants (depicted in purple boxes with yellow letters) include Texas Tech, Maryland, and Harvard.
- Of the nine Pac 12 schools that field softball teams, eight got in the tournament (six with top-16 seedings).
- Of the 11 SEC schools with softball, nine got in. This includes an Arkansas squad that went 7-21 in conference play (27-26 overall). Four of the SEC teams are seeded.
- Of the nine Big 12 schools with softball, six got in. Four are seeded.
- The only two seeds from outside the three power conferences were Louisiana-Lafayette (14) and Louisville (15).
- The Big 10 had a very lean year, getting only two teams in. One was conference champion Michigan (18-5, 39-15). The other was a big surprise, to me at least, namely the co-fourth-place Northwestern (14-10, 27-27). Apparently, the Wildcats' strength of schedule vaulted them over the teams that finished higher in the league standings.