Tech pulled within two in the bottom half of the inning on an Bearkat defensive error and a Gera Alvarez RBI single.
The Bearkats blasted Tech's Matt Harbin for five crucial runs in the top of the fifth.
Tech (17-9) rallied in the bottom of the eighth scoring four runs on three hits. The inning was highlighted by a two-RBI triple by Scooter Jordan and an RBI single by Madison Edwards.
Ertel (0-1) took the loss for Tech, while Nathan Brewer (1-0) picked up the win for Sam Houston State.
Tech and Sam Houston State resume the two-game set at 3 p.m. on Wednesday afternoon at Dan Law Field.