Thomas Scott scored 14 for the Rocket and he had a team-high seven rebounds. Lyon County got 23 points from Warren Sutton.
The Rockets complete their regular-season district play without a victory in the league. Crittenden is 6-11 overall and Lyon is 6-10.
In the girls' game, Crittenden lost by nine despite getting a chance to win it at the line. The Lady Lyons committed 24 fouls in the contest, but the Lady Rockets made just 21-of-37 free throws.
Bailey Brown led Crittenden with 22 points, including a dozen at the foul line. Jill P'Poole had 18 for the Lyon girls, who finish 4-2 with second place in the district wrapped up. Crittenden completes its district play with no league victories. The Lady Rockets are 1-15 overall.