POMONA, Calif. -- Senior left-handed pitcher Ryan Dunn tossed seven solid innings Saturday, leading Cal Poly Pomona to a 1-0 home victory against No. 3 Chico State to snap the Wildcats' 15-game win streak.

After allowing four runs in the first week of the season, Dunn has given up just four scores since then. His earned run average has dipped to 1.50, ranking fifth among California Collegiate Athletic Association (CCAA) pitchers.

Saturday's second game of a doubleheader featured a pitching duel between Dunn and Wildcats' senior righthander Mike Botelho. Dunn held Chico hitless through the first three innings and the two pitchers combined to allow just five hits between them.

The offenses went scoreless through five complete innings, building the excitement among the large crowd at Scolinos Field. After Botelho stole away some CPP momentum in the fifth when the Broncos stranded two more runners on base, the host squad started another rally in the bottom of the sixth.

Trevor Magno, who reached base in four of his seven plate appearances Saturday, doubled down the left field line to open up the Broncos' half of the sixth. Bo Walter ended a five-pitch at-bat by grounding out to the right side of the infield, succesfully moving Magno to third. Senior outfielder Jordan Whitman didn't waste any time driving in the eventual game-winning run as he drove a sacrifice fly to center that brought Magno in to score.

Dunn came out firing once again in the seventh, getting two groundouts and a strikeout. He finished with six strikeouts Saturday, the second-highest total for him in 2013. Making his 52nd career appearance as a Bronco, Dunn improved to 4-1 with the victory.