The Wildcats' sophomore catcher ripped a game-winning single into the right-centerfield gap Saturday to give UK a 5-4 walk-off victory over the Razorbacks at Cliff Hagan Stadium.
Squires, who had grounded out with the winning runs in scoring position to end Friday's opener, helped the Cats split Saturday's doubleheader and avoid a sweep. Arkansas won the first two games of the series 1-0 and 2-0.
Kentucky (24-15, 10-8 SEC) got two hits apiece from Squires, Dorian Hairston and Tristan Pompey. Hairston drove in three runs, including a two-run homer in the bottom of the fourth to tie the game.
Sean Hjelle (3-0) recorded the final out of the seventh inning to come away with the victory. Kyle Cody started for UK, allowing three earned runs over 5.1 innings with four strikeouts and one walk. Zach Logue, Zach Strecker, Logan Salow, Zach Pop and Hjelle combined to hold the Razorbacks scoreless over the final 1.2 innings.
Arkansas (24-16, 6-12 SEC) reliever Doug Willey took the loss, allowing two earned runs in the seventh. Josh Alberius came on in relief of Willey (1-2) and served up the game-winning hit to Squires.
The Cats return to action on Tuesday at home against Dayton. First pitch is slated for 6:30 p.m. ET at Cliff Hagan Stadium.
The Razorbacks' Zach Jackson (3-4) outdueled UK's Dustin Beggs (7-1) who suffered his first loss of the season in the first game of Saturday's doubleheader. Jackson pitched a complete game shutout, allowing only two hits and three walks while striking out seven.
Beggs was almost as stingy, surrendering only two earned runs on five hits and a walk.
Arkansas got an RBI double from Luke Bonfield and an RBI fielder's choice from Chad Spanberger in the fourth inning to give Jackson all the run support he would need.
UK loaded the bases with two outs in the seventh inning, but Arkansas retired Pompey on a fly ball to center to end the game.