Ryan Cooper had the lone goal as the Nelson Leafs fell to the Rebels 4-1 in Castlegar on Friday.
Caiden Kreitz stopped 28 shots for the Leafs (33-9-4), who rested Sawyer Hunt and goaltender Josh Williams. Nelson has already secured first place in the Neil Murdoch Division and will open the playoffs Feb. 23 at home to the Grand Forks Border Bruins.
Ed Lindsey, Kirkland Spencer, Chris Breese and Ren Mason scored for Castlegar (30-12-3), with Tanner Douglas making 21 saves. The Rebels, who finished second in the division, will open the post-season at home to the Beaver Valley Nitehawks on Feb. 23.
Nelson finishes the regular season Saturday night on the road against Beaver Valley.