The top three hitters in the order — Rickenbach, Moysh and Burgess — each had three hits while Adam Gunn threw five scoreless innings to pick up his fifth win of the year.
The Cougars took an early lead in game two with a run in the first and stretched it to 5-1 after a four-run third. Aveeno Nasiloski's two-run double plated two in the inning.
Rickenbach homered — a two-run blast to left center — and Burgess doubled home Moysh in the fifth to get UVU within a run but William Hill answered with a solo shot to left in the bottom of the inning to make it 6-4 through five.
Rickenbach delivered again the sixth with a two-run single, tying the game at 6, but again CSU answered with a single run to regain the lead, 7-6, after six innings.
Austin Heaps led off the seventh with a double and came home to score the tying run when Hatch dribbled a seeing-eye single past short. Three batters later, Hart delivered his big blow to put Utah Valley ahead for good.
The Wolverines added two more in the eighth, getting back-to-back doubles from Taylor Berg and Willie Pratt to make it a 12-7 game. Hatch homered in the ninth — a two-run shot down the left-field line — before Berg had another double and later scored the 15th run.
In addition to Berg, who had a four-hit game, five other players each had three hits; Moysh, Burgess, Kallunki, Hatch and Hart while Rickenbach drove in four runs.
Albert Carpen and Ryan Malhotra had three hits apiece to lead Chicago State.
Jeremy Gendlek (6-3), in his first relief appearance of the season, got the win and has now won six straight decisions including two this week.
In the four-game series, Utah Valley batted .488, scored 81 runs and slugged .777 as a team. Moysh had 14 hits in the series, with at least three in each game, and batted .636.
UTAH SOFTBALL: At Salt Lake City, the Utes' Pac-12 Conference matchup with No. 19/15 Oregon was postponed in the top of the third frame due to rain. The game will resume today at 11 a.m. MT. The Utes trail the Ducks, 3-2, with one out in the top of the third.
When action resumes tomorrow, there will be a 1-0 count on Oregon's Christie Nieto and senior right-hander Generra Nielson, who just entered the game, will be in the circle for Utah.
BYU, USU SOFTBALL: At Provo, the Cougars (28-12, 7-3 WAC) hit two home runs in the seventh to rally past the Aggies (14-28, 2-10), 6-4.
Batting first in the bottom of the seventh, senior Delaney Willard went way over the left field fence to tie the game at 4 and give BYU its first run since the first inning.
In the Cougars' ensuing at bat, Katie Manuma drew a walk to set up Stacie Toney. Toney obliged with a walk-off bomb to center field, completing the comeback.
Freshman outfielder Hailey Froton led the way for the Aggies with two hits and one RBI.
WSU SOFTBALL: At Ogden, the Wildcats earned a two-game split during the first day of its weather-delayed series with rival Idaho State.
The Wildcats fell 10-2 in five innings in the opening game, but then rallied for a 6-5 win.
Weber State honored the team's five seniors (Lyndsey Minnich, Symbree Minniear, Erika Dixon, Kami Holley and Sarah Clark) in between the two games.
Minnich went 2-for-2 at the plate, while advancing to first base after being hit by a pitch three times during the two contests.
UVU SOFTBALL: At Seattle, the Wolverines (24-16-1, 5-5) dropped a Pacific Coast Softball Conference doubleheader to Seattle University (13-20, 6-4), 2-0 and 11-2.
In the opener, both Tiffany Mills and Jessica Ulrich pitched very well for their respective teams as they combined to allow just eight hits in the contest.
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