San Diego Regional

The San Diego Regional is a regional tournament in the state of California. In Southern California, teams are restricted to a region based on location (although some regions, such as the Los Angeles region, host multiple regional tournaments that a school may choose from). San Diego is notable for being the largest regional tournament in the nation; as of 2017, it has 118 Division B teams and 78 Division C teams. The Division B regional has been held had at Carlsbad High School at least in the 2015, 2016, 2017 and 2018 events. The Division C was previously held at University High School, it has been relocated to The University of California, San Diego for the 2019 event. Carmel Valley Middle School has the highest win streak, with 6 wins in a row. However, that streak was broken in 2018.

Past Regional Champions
{| class="wikitable sortable" style="text-align:center" ! Year !! Division B Champion !! B Champ States Place !! Division B Runner-up !! B Runner-up States Place !! Division B Third Place !! B Third Place States Place !! Date !! State Bids !! Teams 1 Tie
 * + Division B Results
 * 2007 || Carmel Valley Middle School || 2nd || Black Mountain Middle School || || Mesa Verde Middle School ||  ||  ||  ||
 * 2008 || Black Mountain Middle School || 4th (174) || Carmel Valley Middle School || 3rd (151) || Mesa Verde Middle School || 7th (223) || ||  ||
 * 2009 || Mesa Verde Middle School || || Carmel Valley Middle School ||  || Black Mountain Middle School ||  ||  ||  ||
 * 2010 || Black Mountain Middle School || || Carmel Valley Middle School || 2nd || Mesa Verde Middle School ||  ||  ||  ||
 * 2011 || Black Mountain Middle School || 5th (209) || Carmel Valley Middle School1 || 2nd (134) || Marshall Middle School1 || 4th (163) || ||  ||
 * 2012 || Carmel Valley Middle School ||  || Mesa Verde Middle School ||  || Black Mountain Middle School ||  ||  ||  ||
 * 2013 || Carmel Valley Middle School || 2nd (134) || Mesa Verde Middle School || 5th (206) || Marshall Middle School || 8th (247) || ||  ||
 * 2014 || Carmel Valley Middle School || 2nd || Black Mountain Middle School || || Mesa Verde Middle School ||  ||  ||  ||
 * 2015 || Carmel Valley Middle School || 2nd (135) || Black Mountain Middle School || 9th (270) || Mesa Verde Middle School || 7th (250) || ||  ||
 * 2016 || Carmel Valley Middle School || 4th (163) || Oak Valley Middle School || 7th (192) || Mesa Verde Middle School || 3rd (140) || ||  ||
 * 2017 || Carmel Valley Middle School || TBA || Oak Valley Middle School || TBA  ||Mesa Verde Middle School  || TBA || 2/4/17 || 8 || 118
 * 2018 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || || |
 * 2019 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || ||
 * 2013 || Carmel Valley Middle School || 2nd (134) || Mesa Verde Middle School || 5th (206) || Marshall Middle School || 8th (247) || ||  ||
 * 2014 || Carmel Valley Middle School || 2nd || Black Mountain Middle School || || Mesa Verde Middle School ||  ||  ||  ||
 * 2015 || Carmel Valley Middle School || 2nd (135) || Black Mountain Middle School || 9th (270) || Mesa Verde Middle School || 7th (250) || ||  ||
 * 2016 || Carmel Valley Middle School || 4th (163) || Oak Valley Middle School || 7th (192) || Mesa Verde Middle School || 3rd (140) || ||  ||
 * 2017 || Carmel Valley Middle School || TBA || Oak Valley Middle School || TBA  ||Mesa Verde Middle School  || TBA || 2/4/17 || 8 || 118
 * 2018 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || || |
 * 2019 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || ||
 * 2017 || Carmel Valley Middle School || TBA || Oak Valley Middle School || TBA  ||Mesa Verde Middle School  || TBA || 2/4/17 || 8 || 118
 * 2018 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || || |
 * 2019 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || ||
 * 2018 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || || |
 * 2019 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || ||
 * 2019 || Oak Valley Middle School ||  || Carmel Valley Middle School || ||Pacific Trails Middle School || 4th || || ||