Matt Larson | Big Sioux Media The Tri-Valley Mustang wrestling team finished sixth at the Redfield Invite on Saturday, February 4. The Mustangs finished with 87.0 points. Parkston (164.0) finished first, Redfield (139.5) was second, and Wessington Springs/Woonsocket/Wolsey-Wessington (135.0) placed third.Brody Dybvig finished second in the 138-pound class with a 2-1 record. Isaac Nehlich was…