EDMOND, Okla. -- Brittany Weaver may be small in stature but she came up big when it counted for Central Oklahoma Wednesday, clubbing a two-run home run in the bottom of the 7th inning to catapult the No. 3-ranked Bronchos to an 8-6 first-game triumph against Midwestern State.

The walk-off blast by the 5-foot-2 senior second baseman kept a lengthy winning streak intact and UCO added to it in the nightcap, using another long ball to take control early en route to an 8-4 victory that made it 34 in a row for the Bronchos.

That's tied for the sixth-longest winning streak in NCAA Division II history, with UCO (36-3) set to continue a regular season-ending homestand Saturday at 2 p.m. against No. 17 Missouri Western.

Kacie Edwards had another huge day at the plate for the Bronchos, driving in eight runs while going 5-for-7 with two homers and her first career triple to spark the sweep.

The junior third baseman keyed UCO's comeback from a 4-0 deficit in the opener, belting a three-run homer in the bottom of the sixth inning. That got the Bronchos within 4-3 and Devyn Frazier's sacrifice fly tied it, but MSU came back with a two-run homer in the top of the seventh to go back on top 6-4.

And again UCO responded.

Nathalie Timmermans started a one-out rally in the bottom of the seventh with a bloop single to right field and Edwards followed with her triple down the right field line to pull the Bronchos within a run.

Megan Whitmire's single through the right side plated Edwards with the tying run and Weaver quickly got the game winner, hammering the first pitch she saw high over the left-center field fence for her fifth homer of the season.

Rachael Steverson earned the pitching win with four innings of relief work, improving to 19-2. Edwards, Timmermans, Whitmire and Weaver had two hits apiece to pace a 10-hit attack.

The Bronchos jumped on top quickly in the second game, getting an RBI single from Edwards and line-drive three-run homer from Whitmire in the first inning to go ahead 4-0.

Edwards accounted for the next three runs, delivering an RBI single in the second and a two-run homer – her 16th – in the fourth to up the lead to 7-0.

Ashley Noles added a solo homer in the fifth to keep UCO in front by seven (8-1), before the Mustangs scored the final three runs to arrange the final score.

The Bronchos finished with 13 hits, getting three each from Edwards and Whitmire and two apiece from Frazier and Hannah Justus.

Amanda McClelland picked up the win in the circle, going the first six innings to move to 17-1.