JU (22-20, 11-8) put up six runs in the fifth and a run in the sixth while Tomshaw retired 17 of the final 18 KSU (17-29, 8-11) batters he faced.
“This was a huge win for us,” said JU head coach Terry Alexander. “We got in that early hole again but we came roaring back. I’m proud of how we responded but we have another game to go to win this series.”
Tomshaw (6-1) got the win after allowing seven runs in nine hits with a walk and three strikeouts in nine innings.
J.B. Johnson (5-1) was tagged with the loss after allowing one run on two hits with four strikeouts in three innings. Josh Carr got the no-decision after allowing five runs on six hits with a strikeout in 4.1 innings of work.
Along with Howick, senior first baseman Alex Martinez went 3-for-4 with a home run and three RBI. Freshman designated hitter Adam Brett Walker went 2-for-4 to also lead the Dolphins.
Peyton Hart led the Owls by going 3-for-4 with double, home run and two RBI. Ronnie Freeman also went 2-for-4 with a home run and two RBI.
The Owls took a 1-0 lead in the first when Tyler Stubblefield scored from third on a wild pitch.
JU evened the score, 1-1, in the bottom of the second when Howick hit a two-out RBI double down the left field line.
The Owls opened up a 7-1 advantage in the top of the third after scoring six runs on five hits, including two two-run homers.
The Dolphins came roaring back to tie it up, 7-7, in the bottom of the fifth when Howick hit a two-run homer, sophomore left fielder Jonathan Murphy hit an RBI single to right center and senior first baseman Alex Martinez hit a three-run shot to left center.
JU took an 8-7 advantage in the bottom of the sixth when Howick led off the inning with a solo homer to left.