Buehler took over for struggling first-round draft pick Tyler Beede and helped move Vanderbilt within one win of the CWS championship round.
The Commodores (48-19) will play in a bracket final Friday against the winner of a Wednesday elimination game between UC Irvine (41-24) and Texas.
Buehler (12-2) retired the first nine batters he faced and finished with seven strikeouts in only his third relief appearance of the year. Only two balls were hit out of the infield against him.
Marietta’s Dansby Swanson had his second solid game of the World Series. The former Blue Devil standout went 3-for-5 with a pair of doubles, a walk, two runs scored and a stolen base.
Norwood’s bases-loaded sacrifice fly in the fifth inning put Vanderbilt up 5-4, and his two-strike, two-out single in the seventh made it a two-run game.