The doubleheader was announced prior to the first game, due to thunderstorms expected in the area on Sunday.
Leftfielder Kurt Lipton, making his first career SEC start, led off the ninth with a walk off of UT closer Sean Watson. He then advanced to second on David Macias' sacrifice bunt paving the way for the Alvarez hit. Ryan Flaherty later plated Alvarez with a RBI single to left to make it 6-4.
Stephen Shao (2-1) picked up the win with 2.1 innings of scoreless relief. He came into the game in the seventh and promptly got out of a no-out bases loaded jam to keep the game within one run for the Commodores, 4-3. He also was able to induce a double play in the eighth on a bunt attempt by second baseman Michael Rivera.
Tyler Rhoden recorded the final two outs of the game to record his second save of the year.
Brian Van Kirk's RBI single in the first staked the Vols to a 1-0 lead. David Macias hit a RBI double to tie the game in the third. Alex Feinberg doubled to right and moved to third on a groundout by Kurt Lipton prior to Macias's hit.
Kelly Edmundson hit a three-run homer in the bottom of the third to give the Vols a 4-1 lead.
Dominic de la Osa and Ryan Flaherty delivered RBI singles in the fifth to cut the lead to 4-3. The Commodores then tied the game in the eighth on Ryan Davis' RBI double to right that plated Shea Robin who doubled to left to lead off the inning.
UT scored four unearned runs in the bottom of the eighth to rally from a 2-1 deficit and defeat Vanderbilt 5-3 in game one.
Matt Buschmann held the Volunteers in check for seven innings before Cody Brown reached base on a fielding error by third baseman Pedro Alvarez. Jarred Frazier then attempted a sacrifice bunt that catcher Shea Robin fielded and then overthrew second base allowing both runners to be safe. Julio Borbon then placed a bunt down the third base line that Buschmann could not get to in time to load the bases. Tony Delmonico fouled out to third and then J.P. Arencibia laced a double into the rightfield corner that brought in the go ahead run. UT then added a sacrifice fly RBI to make it 5-3.
The Commodores did not go quietly in the ninth as Shea Robin roped a one out double into right and scored on Brian Hernandez' RBI double into left-center. Alex Feinberg flied out to deep left, allowing Hernandez to move to third. Ryan Davis was hit by a pitch and pinch hitter Kurt Lipton drew a full-count walk off of Tennessee closer Sean Watson to load the bases. Watson was able to end the threat, however, as he struck out David Macias to end the game.
Buschmann (4-4) was the tough luck loser after he gave up five runs, one earned, in 7.1 innings. He allowed seven hits and struck out three with no walks.
UT starter James Adkins (7-5) scattered six hits over eight innings of work and allowed two runs while striking out nine with no walks in the winning effort. Watson allowed one run on two hits in the ninth to pick up his ninth save of the year.
Brian Hernandez had two hits to lead VU, while Arencibia had two hits and two RBI to lead the Vols.
Alex Feinberg and Ryan Davis delivered RBI singles in the second inning to stake the Commodores to a 2-0 lead.
Cody Brown's RBI single in the bottom half cut the lead to 2-1.
Vanderbilt will be back home for a midweek contest against Lipscomb on Wednesday at 4 p.m., before heading back on the road in SEC action next weekend at LSU.
Vanderbilt 020 000 001-382 Tennessee 010 000 04x-581
Buschmann, Shao (8) and Robin. Adkins, Watson (9) and Arencibia. W- Adkins 7-5, L- Buschmann 4-4. SV- Watson (9). HR- VU: None. UT: Edmondson (4).
Vanderbilt 001 020 012-6(12)1 Tennessee 103 000 000-4(14)1
Crowell, Davis (3), Shao (7), Rhoden (9) and Robin. Lindblom, Watson (8) and Arencibia. W- Shao 2-1, L- Watson 4-3. SV- Rhoden (2). HR- VU: None. UT: Edmundson (4).