DALLAS -- There's a lot of rumbling and tumbling going on in Dallas, and it isn't coming from the Cowboys or the Stars.
The 2014 Blood and Thunder Roller Derby World Cup rolled into Big D and will be here through Sunday at the Convention Center.
Thirty teams are competing, including Team USA which won the inaugural World Cup in 2011.
Vanessa "V. Diva" Sites hopes to win a second Championship with her team.
"We are going to try. There [are] so many teams here. All of them that National Roller Derby World Cup title," Sites said.
They came out on top twice Thursday beating The Netherlands and Puerto Rico.
Denmark wasn't so lucky against Canada.
"So far we only played one bout. In our hearts we won, but on the score board not so much," Jannye Holm Larsen, who plays for Team Denmark, explains with a sigh.
These ladies sacrifice a lot to be here, including spending their own hard-earned cash for travel.
"We have daily jobs," Sites explains. "I work as a nurse and we had to pay to get to our places. We love it cause we love roller derby."
But don't be fooled, they're as tough as they come and play to win.
"Yea there are some really tough girls," Larson said.
"I have bruises and broken legs everything from it. It's tough," Sites explained.
"Hard-headed yes," Kendal 'Mah-ko' Brown, part of Team West Indies, said laughing. "No they are pretty tough. Their sweet hearts. They just look tough. We`re all working towards the same goal,"
So who will reach their goal and raise the trophy? Our money is on Team USA.