March Madness is about to ramp up. 

The South Dakota boys basketball postseason action starts Monday as teams will look to punch their tickets to the state tournaments. The Class B and A region tournaments are this week and the SoDak 16 qualifying games are Friday across the state. 

Here’s a look at the Class B region-by-region breakdown:

Class B

Region 1B

Outlook: Aberdeen Christian and Waubay/Summit both finished 17-3 in the regular season, but the Knights secured the region’s No. 1 seed.

The Knights, who are No. 5 overall in Class B, will play the winner of Britton-Hecla (4-16) and Wilmot (3-16) in the quarterfinals on Tuesday. Last season’s Class B state runner-ups, Aberdeen Christian enters the postseason having won 13 of its last 14 games. Aberdeen Christian’s season was highlighted by a four-game winning streak over Class B foes Potter County (61-56), Faulkton Area (58-54), Waubay/Summit (57-50) and Platte-Geddes (60-49).

Winners of nine straight, Waubay/Summit is No. 12 overall in the Class B seed points. Waubay/Summit’s nine-game winning streak was highlighted by a victory over Lyman (56-39) at the DWU/Culver’s Classic. The Mustangs will play No. 7 seed Leola/Frederick Area (8-12) on Tuesday. 

The other first-round games include: No. 4 Langford Area (11-9) vs. No. 5 Northwestern (8-12) and No. 3 Warner (12-8) vs. No. 6 Aberdeen Roncalli (6-14).

Region 2B

Outlook: Lower Brule recorded an impressive 17-3 record to earn the region’s No. 1 seed, holding off No. 2 seed Potter County by 1.05 seed points. 

Lower Brule, which is No. 2 overall in Class B seed points, captured the Lakota Nation Invitational title and defeated six Class A teams to bolster its seed points total. Its three losses were against Class A teams Clark/Willow Lake (53-52), Lakota Tech (79-73) and Sioux Valley (70-69). The Sioux will play the No. 8 Miller (3-17) vs. No. 9 North Central (2-18) winner in the quarterfinals. Lower Brule is gunning for its second consecutive state tourney berth. 

Potter County recorded a 19-1 regular season record, with its lone defeat against Aberdeen Christian (61-56). The Battlers finished the regular season on a 13-game winning streak, including wins over Class B foes Faith (73-72), Faulkton Area (70-58), Viborg-Hurley (83-55), Timber Lake (83-63) and Class A teams Hanson (69-59) and Stanley County (73-50). Potter County is No. 4 overall in the Class B standings. The Battlers will play the Sully Buttes (9-11) vs. No. 10 Sunshine Bible Academy (0-16) winner in the quarterfinals. 

The other first-round games include: No. 4 Ipswich (13-7) vs. No. 5 Highmore-Harrold (12-8) and No. 3 Faulkton Area (15-5) vs. No. 6 Herreid/Selby Area (9-10). 

Region 3B

Outlook: De Smet, the 2021 Class B state champs, compiled a 19-1 regular season to earn the state’s No. 1 overall seed. 

The Bulldogs’ lone defeat was against national power Dream City Christian, Arizona, by a 61-57 score at the Sanford Pentagon in December. De Smet’s season includes wins over Class B foes Dell Rapids St. Mary (60-42), Howard (59-38), White River (63-49), Canistota (65-45), Castlewood (77-34), Wolsey-Wessington (56-32) and wins over seven Class A teams. De Smet, winners of 16 straight, will play the No. 8 Waverly-South Shore (3-15) vs. No. 9 Lake Preston (2-18) winner in the quarterfinals. 

Castlewood (14-6) enters postseason play winning 10 of its last 11 games, with its last defeat against De Smet on Feb. 7. The Warriors, who are No. 10 overall in Class B seed points, defeated Class A Sioux Valley (59-52) on Feb. 15 to highlight their four-game winning streak.

Castlewood plays the No. 7 Arlington (7-13) vs. No. 10 Iroquois/Doland (3-17) winner in the quarterfinals. 

The other first-round games include: No. 4 Estelline/Hendricks (12-8) vs. No. 5 James Valley Christian (10-10) and No. 3 Wolsey-Wessington (15-5) vs. No. 6 Hitchcock-Tulare (8-12). 

Region 4B

Outlook: Howard held off a logjam of teams to earn the region’s No. 1 seed. 

The Tigers (16-4) finished with 44.200 seed points, holding off No. 2 Dell Rapids St. Mary (43.350), No. 3 Ethan (42.850) and No. 4 Canistota (42.650).

Howard’s season was highlighted by an eight-game winning streak, including three straight victories over Hanson (50-41), Bridgewater-Emery (49-42) and Ethan (49-46). The Tigers picked up wins over Canistota (49-42) and Viborg-Hurley (67-41) on Feb. 15 and Feb. 17, respectively. The Tigers are No. 9 overall in Class B standings. Howard plays the No. 8 Mitchell Christian (6-14) vs. No. 9 Colman-Egan (3-17) winner in the quarterfinals. 

Dell Rapids St. Mary (15-5) enters postseason play having won eight of its last nine games. The Cardinals, who qualified for last season’s state tourney, is No. 14 overall in the Class B standings. Dell Rapids St. Mary will play the No. 7 Bridgewater-Emery (9-11) vs. No. 10 Sioux Falls Lutheran (2-9) winner in the quarterfinals. Bridgewater-Emery defeated Dell Rapids St. Mary (54-48) on Feb. 25. 

The other first-round games include: No. 4 Canistota (13-7) vs. No. 5 Chester Area (10-10) and No. 3 Ethan (14-6) vs. No. 6 Oldham-Ramona/Rutland (11-9). 

Region 5B

Outlook: Freeman Academy/Marion compiled a 18-2 regular season record to grab the region’s No. 1 seed. 

The Bearcats, who are No. 6 in Class B overall, rattled off 11 straight wins in the middle of the season to bolster their record. FAM’s season also included the Great Plains Conference championship, defeating Burke (69-60) in the title game. FAM’s two losses were against Class B foes Howard (56-53) and Lower Brule (75-60). 

Freeman Academy/Marion, which is after its first state tourney berth as a co-op, plays the Alcester-Hudson (3-17) vs. Freeman (1-19) winner in the quarterfinals. 

Viborg-Hurley secured the No. 2 seed with a 12-8 record. The Cougars, who have qualified for three straight state tournaments, play No. 7 Menno (6-14) on Tuesday. 

The other first-round games include: No. 4 Irene-Wakonda (8-12) vs. No. 5 Scotland (9-11) and No. 3 Centerville vs. No. 6 Gayville-Volin (11-9).

Region 6B

Outlook: Platte-Geddes edged Burke by just .350 seed points to secure the region’s No. 1 seed. 

The Black Panthers, who are No. 7 in Class B standings, rattled off eight straight wins in the middle of the season to strengthen their 15-5 record. Four of Platte-Geddes’ five losses were against Class A teams, while it also lost to Class B foe Aberdeen Christian (60-49). 

Platte-Geddes will play the No. 8 Kimball/White Lake (7-13) vs. No. 9 Avon (3-17) winner in the quarterfinals. 

Burke, which is No. 8 in the Class B standings, won 10 of its last 11 games to help secure the region’s No. 2 seed. Burke’s three losses were against Platte-Geddes (65-53), Gregory (56-52) and Freeman Academy/Marion (69-60). Burke will play the No. 7 Tripp-Delmont/Armour (10-10) vs. No. 10 Colome (3-17) winner in the quarterfinals. 

Gregory (13-7) has won eight of its last 10 games to secure the region’s No. 3 seed. The Gorillas defeated three Class A teams, including a 69-60 victory over Winner, its lone defeat of the season. 

The Gorillas play No. 6 Wessington Springs (11-9) on Tuesday. No. 4 Marty (11-8) plays No. 5 Corsica-Stickney (12-7) in the other first-round game. 

Region 7B

Outlook: Class B power White River (16-2) is once again the region’s No. 1 seed.

The Tigers, who have qualified for every Class B tournament since 2006, are No. 3 overall in the Class B standings. White River’s two defeats were against the Class B’s top two teams Lower Brule (60-57) and De Smet (63-49). 

The Tigers’ season was highlighted by wins over seven Class A teams, including a 64-62 victory over perennial power Sioux Valley. They also knocked off formidable Class B opponents Aberdeen Christian (58-48), Lyman (58-36, 66-56) and Canistota (61-50).

White River plays the No. 8 New Underwood (7-13) vs. No. Jones County (7-13) winner in the quarterfinals. 

Lyman (14-6) earned the region’s No. 2 seed and is chasing its second straight Class B state tourney appearance. The Raiders, who are No. 13 overall in Class B, have won six of their last eight games. During the season, Lyman recorded wins over four Class A teams to bolster their record. 

Lyman plays the No. 7 Crazy Horse (9-10) vs. No. 10 Edgemont (4-16) winner in the quarterfinals. The other first-round games include: No. 4 Wall (12-8) vs. No. 5 Oelrichs (14-6) and No. 3 Philip (14-6) vs. No. 6 Kadoka Area (11-9). 

Region 8B

Outlook: Timber Lake compiled a 16-3 record to earn the region’s top seed. 

The Panthers, who are ranked No. 12 overall in Class B, earned the Little Moreau Conference title with a 65-59 come-from-behind win over Faith on Feb. 5.

Timber Lake’s three losses were against Faulkton Area (65-61), Warner (51-37) and Potter County (83-63). The Panthers, who are looking for their third state tourney berth since 2018, won 11 of their last 13 games to enter postseason play. 

Timber Lake plays the No. 8 Tiospaye Topa (3-14) vs. No. 9 Newell (1-16) winner in the quarterfinals. 

Harding County (14-5) edged Faith (11-9) by .613 seed points to earn the No. 2 seed in the region. The Ranchers and Longhorns split during the regular season, while a potential third matchup looms if both teams win on Tuesday. 

Harding County plays the No. 7 Bison (4-12) vs. No. 10 Takini (1-18) winner in the quarterfinals. Faith plays No. 6 McIntosh (5-12) on Tuesday, while No. 4 Lemmon (11-9) plays No. 5 Wakpala (11-8) in the other first-round contest.