Mason Olsen and Dustin Fox each racked up 57 rushing yards and a touchdown for Greybull, while Dante Sylvester added 52 yards and Hayden Howe 20 yards and two touchdowns.
Cade Dooley led the defense with nine tackles, followed by Olsen with seven, Aaron Schwede and Dawson Forcell with five each.
 The older team tasted defeat for the first time. “Thermopolis came to play,” said Coach Troy Wilkinson of the 20-8 setback.
Cole Jensen rushed for 48 yards, Ethan Sherburne 19 and Zack Zeller 16 for Greybull. Clancy Stoffers scored the team’s points, on a touchdown and a two-point conversion.
Chancy Yenny led the team with seven tackles, followed by Clayton Robert with four.
The intramural program will end this weekend with a scrimmage at halftime of Friday night’s Greybull-Rocky Mountain game, followed on Saturday by road games in Thermopolis starting at 1 p.m.