An instant classic in Omaha.
Hours before the final hit, Vanderbilt fans cheered on the VandyBoys upon their departure from the Omaha hotel.
The Commodores warmed up for their 24th College World Series game since 2011.
Vanderbilt made its fifth College World Series appearance since 2011.
After allowing four hits and three runs, one earned, in the first inning, Vanderbilt starting pitcher Kumar Rocker settled in and retired 15 consecutive batters, including seven strikeouts.
After giving up three in the top of the first, Vanderbilt got one back in the bottom of the frame to trail 3-1.
With two outs, Dominic Keegan singled to right field and Troy LaNeve doubled to left center to plate Keegan.
Rocker struck out the side in the second, becoming the eighth Commodore to reach 300 career strikeouts.
A two-out, two-run home run from Gonzalez evened the score at 3-3 in the bottom of the fourth.
Arizona took a 5-3 lead with a two-run home run in the top of the sixth, but Vandy answered with three in the bottom of the seventh to claim a 6-5 advantage.
The Commodores started the comeback with a run-scoring single from Enrique Bradfield Jr. that delivered Gonzalez, who drew a one-out walk.
Carter Young then put Vanderbilt up 6-5 with a two-run home run.
Vanderbilt fans showed up in force in Omaha.
Vanderbilt's four pitchers combined to strike out 19, tied for the second most in College World Series history.
The Commodores finished one whiff shy of the CWS record of 20, set by Ohio State against Washington State in 1965.
Luke Murphy matched his career high with six strikeouts.
Of the final 34 outs the Commodores recorded, 19 were via the whiff.
Arizona tied the game at 6-6 in the top of the ninth, setting the stage for Gonzalez's heroics.
A walk-off single up the middle in the bottom of the 12th by Gonzalez gave the Commodores the win, their fifth consecutive in the College World Series opener.
Vandy's 5-0 mark ties Alabama for the most wins without a loss in game one in College World Series history.
Gonzalez gave Vanderbilt its third walk-off win in the CWS, the most by any program since the tournament moved to TD Ameritrade Park in 2011.
Vandy is 9-1 in one-run games this season, tied for the second-best record in Division I.
The Commodores, who played for 4 hours and 51 minutes Saturday to tie for the fourth-longest game in CWS history, now face N.C. State on Monday at 6 p.m.
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