The Arcata boys will play for the championship at the McKinleyville tournament on Saturday after beating KIPP King 55-34 on Friday night.
The Tigers will play Lincoln in the decider at 2:30 p.m.
Mason Railsback scored a team-high 16 points in the win, as the Tigers improved to 3-0 on the season.
Brandon Bento-Jackson added nine points, all from 3-point range, while Jocab Stoker finished with eight points, all in the fourth quarter.
McKinleyville 71, Windsor 73
A fourth-quarter comeback came up just short for the Panthers, who lost for the second straight day at their own tournament.
Jack Clancy and Michael Boatright each scored 14 points to lead a balanced team performance from the home team, which outscored the Jaguars 22-17 in the final period after trailing by as many as 11 early in the quarter.
Boatright did his best to keep the Panthers in contention early in the second half, scoring nine of his tally in the third quarter.
Clancy sparked the late surge with eight points in the fourth.
T-Ryan Stumph added 13 points in the loss, while teammate Jake Reeser finished with 10 and Thomas Locatelli eight.
Christian Jernigan scored a game-high 24 points for Windsor.
The Panthers will close out the three-day tournament with a third game on Saturday at 11:30 a.m.
South Fork 56, Casa Grande 85
Casa Grande pulled away in the second half to break open a close game at the McKinleyville tournament on Friday.
The Gauchos outscored the Cubs 53-25 after the interval.
Tyler Bates led the Cubs with 14 points, while Riley Gallagher and Oliver Tatton each had 11 points.
Cameron Messenger added nine points and Alex Harding seven.
Both teams will close out tournament play on Saturday.
Eureka 45, West Valley 60
The Loggers came out flat on Friday night, falling to West Valley at the Ukiah tournament.
Jayden Thayer scored a team-high 17 points for Eureka, including four 3-pointers, while teammate Trevor Bell added nine points and Mile Meynell eight points.
The Loggers, who are 0-2, will close out tournament play on Saturday.
Fortuna 69, Cornerstone Christian 77
The Huskies fell to Cornerstone Christian at the St. Helena tournament on Friday.
Jaden Kelley and Bo Cox each scored 14 points for the Huskies, who are now 1-1 on the season.
Ray Hamill writes at humboldtsports.com, where you can read lots more about sports in Humboldt County.