"Our pitching and defense is what got us through this thing, there is no doubt about," said Marshall County head coach Danny Hollingsworth.
Marshall County (3-1) is the only invitational team to gain a top seed and joins three undefeated teams, including defending champion Oviedo, FL, six-time World Series winners Pitt County, NC and Pacific Southwest Regional Champion Lodi, CA at the top.
Marshall County will play the winner of Hazlet, NJ versus Washington, NC on Monday at 10:15 a.m. at the Hal Brady Recreation Complex in Alachua, FL.
"Now we have got to start all over again," said Hollingsworth. "We will come back tomorrow morning and I will get to scout a little bit."
Yelensky also had a huge night at the plate, going 2-4 with three runs scored and a stolen base.
Marshall County scored in the top of the first inning on an RBI base knock by Samantha King after Yelensky led off the game with a base hit and stole second base.
Yelensky would come around to score on an Audubon error, but in the bottom of the inning, the Big Blue All-Stars tied the game on RBI base knocks by Gabby Zaczkiewicz and Brigitte Gutpelet.
There was no scoring in the sixth and the game went to extra innings where Haley Hartley led off the inning with a base on balls.
After a pop-up for the first out, Blair Richards bounced a ball to second that was misplayed and Hartley scampered home with the go-ahead run.
Hannah Singleton delivered the death knell to Audubon when she drilled a two-run single to left field, giving Yelensky all the insurance she would need.
"She is on fire right now, hats off to Hannah Singleton on that big hit, I just love her," said Hollingsworth. "We got some big hits when needed them and have been doing that the entire tournament."
Sydney Thompson reached on a Marshall County error to lead off the home half of the seventh, but three consecutive solid defensive plays in the field gave Marshall County the win and a bye in the first round of championship play.
"We will go with big Sam (Samantha King) back out on the hill tomorrow," said Hollingsworth. "You have to with the horses that got you here now."