OGDEN -- Region 5 is off and running at the state 4-A boys basketball tournament.
Logan High, which had to win four out of its last five games just to reach the tourney bracket, knocked out defending champion Orem 65-60 in opening round action Tuesday morning at the Dee Events Center.
Later, Mountain Crest and Roy took care of business with solid opening-round victories.
Sky View is also in action later today. Bountiful and Woods Cross out of Region 6 will also have opening games later.
The Grizzlies jumped out to an early lead on Orem, the top seed overall in the tourney. Logan led most of the game as it shot 56 percent form the field, 59 percent from 3-point range and 90 percent from the foul line.
Tyler Brimhall led Logan with 23 points and eight rebounds.
Orem took the lead several times in the fourth quarter, but Logan answered each time. Down the stretch, it sealed the game from the free throw line.
Logan will East, a 68-62 winner over Murray on Tuesday, in Thursday's 7:30 p.m. quarterfinal.
Region 5 champion Mountain Crest dispatched Maple Mountain 57-40. The Mustangs won every quarter and will now meet Herriman, a 44-42 winner over Highland, on Thursday at 2:30 p.m.
Faimafili Laulu-Pututau scored 21 points, while Tyler Crosbie added 14 points, eight rebounds, five steals and five assists.
Josh Phelps paced Maple Mountain with 11 points.
Roy turned a two-point halftime deficit into a nice 59-46 victory over Springville to open tournament play.
The Royals, Region 5 runner-up this season, outscored the Red Devils 18-5 in the third quarter to take control.
Roy will now turn around and play in the 12:40 p.m. quarterfinal on Thursday against the winner of the Bountiful-Westlake battle.