Mustang Senior Riley Haynes goes up for two and draws the foul during a hard-fought game in the Region 3A matchup against Garretson. Haynes led the team with 19 points, seven rebounds and two steals. (Photo/Sara Stadem) Matt Larson | Big Sioux Media The #4 seeded Tri-Valley Mustang boys hosted the #5 seeded Garretson Blue Dragons…
