AUSTIN — John McMillon could smell the sweep in the fourth inning.
McMillon, who usually is in a closer role for the Red Raiders, started the four-run, two-out rally in fourth, then provided a crucial insurance home run in the eighth.
The freshman showed up big as the ninth hitter in the lineup and proved to be a closer in more than one way, to give No. 4 Texas Tech (17-4, 3-0) the 8-5 win over No. 21 Texas (13-9, 0-3)
Ryan Shetter, who improved to 3-0, struggled early on in the game, but was able to retire his last seven batters before the bullpen took over in the fifth.
The combination of four Texas Tech relievers allowed just two runs in five innings, only allowing Texas to come within two runs of the lead.
The key moment of the game was in the fourth inning, when the Red Raiders registered four hits with two outs, including doubles by Tanner Gardner and Hunter Hargrove, t0 score four runs.
Texas Tech threatened with runners on the corners in the first inning, but Texas starter Blair Henley got out of a jam to keep the game scoreless.
The Longhorns got to Shetter early, as an RBI single and double gave Texas the 2-0 lead after the first.
But Orlando Garcia cut the deficit in half in the second with a solo shot to left field to make the score 2-1.
The Longhorns responded with a run of their own in the third to improve their lead to 3-1 after the second inning.
However, the Red Raiders were able to tie the game at 3-3 with an RBI ground out from Hunter Hargrove and an RBI single from Michael Berglund.
Shetter calmed down in the third, retiring the order to keep the game tied after three.
Texas Tech put together a two out rally in the fourth, Ryan Long scored on a Gardner double and Josh Jung and Gardner scored on a Hargrove double to make it 7-3.
Erikson Lanning replaced Shetter in the fifth but ran into some trouble. Parker Mushinski, who pitch two and a third innings on Firday, then came in a force a fly out and double play.
Things got intense in the sixth when new reliever Caleb Killan hit Kody Clemens, who ensued an argument with Berglund. Texas proceed to score two runs to cut the Red Raider lead to 7-5.
Texas Tech loaded the bases with one out in the seventh, but hit into a double play to end the frame.
After Dylan Dusek came in and retired the Longhorn order in six pitches, McMillon hit a home run to left center to give the Red Raiders the 8-5 lead.
Connor Beck reached base in the ninth inning, which totaled the Red Raiders base runners to 20 on the day.
Dusek pitched into the ninth inning and retired all nine batters he faced to give Texas Tech the series sweep.