Metamora completed a sweep of the season series from the East Peoria boys basketball team Feb. 1.
The Redbirds turned a 19-6 advantage after one quarter into a 69-41 Mid-Illini Conference victory at Allison Gymnasium.
Sean Mulhern had nine points to pace 11 Raiders who scored.
Hayden Burtis of East Peoria hit a pair of fourth-quarter 3-pointers to tally six points, and Jakob Burtis added five.
By the end of the third period, Metamora was on top, 49-25.
The Redbirds, who have just two losses on the season, had three players in double figures. Alex Garber was their leader with 13 points, all of which came in the fourth quarter.
Canton 93, EP 89 (OT)
Alice Ingersoll patrons were treated to a Saturday night barnburner.
East Peoria (2-18, 1-9) took an eight-point lead into the fourth quarter, but the Little Giants forced an extra session, then outscored the guests, 13-9, for the victory.
Mulhern destroyed his previous career-high total with 37 points, which included a 12-of-16 effort at the free-throw line.
His teammates provided a lot of help in easily the Raiders' best offensive production of the season.
Ryan Slusher made, like Mulhern, made a trio of 3s, to compile 17 points.
Karson Buckley had 10 points and Michael Thompson nine for East Peoria.
The Raiders were 22-of-28 at the charity stripe and made 11 treys.
Jake Chenoweth had 30 points for Canton and Mason Goforth added 22.
The Little Giants swept East Peoria in the M-I series, but both games were decided by just two possessions.
Postseason picture: The Illinois High School Association Class 3A postseason pairings will be released Friday.
The regional East Peoria plays host to is led by Washington, ranked No. 3 in the Jan. 30 Associated Press 3A state poll.
Against the five-team field, the Raiders are 1-3.
East Peoria is certain to be in a 4-5 quarterfinal matchup with Morton.
Based on their Jan. 19 win over the Potters, the Raiders could wear their home uniforms as the higher seed.