OG, 6-3, 325, Honolulu, Hawai'i (Saint Louis School)
Koehler was ranked as the No. 2 overall prospect in Hawai'i by Rivals.com and 247Sports.com, with Rivals tabbing him as the No. 8 offensive guard in the country and 247Sports ranking him 14th at his position. Following a senior season in which he blocked for an offense that averaged 32.5 points per game, he was selected to play in the U.S. Army All-American Bowl. In his junior year, the Crusaders topped 30 points in five of 10 games and averaged 31.8 points per game. Saint Louis won the Division I state title his sophomore season, when the offense averaged 40.8 points per game, including 39.0 points per game in the playoffs. He was actively involved in community service, including coaching youth league basketball and contributing to Special Olympics, Meals on Wheels, MDA and beach cleanup. He was coached at Saint Louis by John Hao and Matt Wright. Koehler received numerous offers and selected Arkansas over Tennessee, Oregon, Cal and Kansas.