Maximum Fighting Championships, a Canadian version of the UFC, had a fight on May 10 that featured two brothers squaring off in their professional debuts.
Mike and Thomas Treadwell fought in the Shaw Conference Centre in Edmonton, Alta. It left their mother in tears, but fortunately for her, it didn't last very long.
Thomas won by submission in the second round.
When brothers engage in competition at any level, rivalies tend to run deep.
For the Rasmus brothers, competing began at an early age, usually on the baseball diamond.
Colby and Cory Rasmus were never on the same baseball team prior to high school.
They later became teammates on the top ranked Russell County High School ball team and the 1999 Little League World Series runner up team.
Today, Colby and Cory are major leaguers, while younger brother Casey is finding success in the minors with Double-A Springfield in the Cardinals organization.
A fourth Rasmus, youngest brother Cyle, graduated from Columbus State University where he batted .336 with a homer and 13 stolen bases. He's no longer playing baseball but continues to help out with the sport within his community.
Four is enough for two teams when you grow up playing in the sandlot.
"There's four of us, so we always had two on two growing up," said Cory, now pitching for the Los Angeles Angels after being traded by the Atlanta Braves. "Me and him (Colby) were never on the same team, but we were the two oldest, so we each got to pick one of the younger guys, and it was two on two every day."
According to Cory, it wasn't only baseball the two eldest brothers battled over.
"As far back as I can remember, we were always doing something competitive, whether it be baseball, basketball, football out in the yard, or inside playing video games. Whatever the case may be, as long as it was something competitive."
Cory explained how when the boys were younger, all they wanted to do was beat each other. Now that they've made it to the show, ironically, they support each other the most despite being opponents.
"Nowadays, it's all about trying to be helpful or just somebody to talk to throughout the season, and helping each other as much as possible."
Being the eldest brother, Colby understands his role from a family standpoint is to always be there for his brothers.
"That's the way it's always been," he said. "My little brother's always right there behind me everywhere I went, so I try to keep them positive and try to take care of them as best I can. And now, being in the position I'm in with a few years under my belt, and him (Cory) just coming up, I know how hard this game is."
Both Colby and Cory committed to Auburn University for college ball, but when the pros came knocking, it was an easy decision to pursue their dream of playing professional baseball.
In 2005, Colby was drafted 28th overall by the St. Louis Cardinals, while Cory went 38th overall to the Braves the following year.
Seven years after Cory was drafted the two eldest Rasmus brothers finally faced each other in a major league game. In Toronto on May 28 Colby smacked a double to left field off Cory.
"Like I said before, it was a strange feeling, a lot of emotions going on. It was awesome and terrible at the same time."
Cory went over after the game to congratulate his brother (who also notched a home run during that game), and went to dinner with him, but that doesn't mean he doesn't want another crack at him.
"You don't ever want your brother to beat you at anything," said Cory. "But having this opportunity to play against him, he got me. More power to him and hopefully I get him next time."
For Colby, success is one thing, but being the main supporting cast for his brothers is an advantage he is able to provide. An advantage that Colby believes he didn't have.
"There's always a lot of negativity coming from every angle, so I just try to keep them as positive as I can," Colby said. "I feel like that's better for me to do then try to preach at them to tell them this and that because there's plenty enough negative in this game, so I just try to be a positive influence and anything I can help them with I try to do it as best I can."
They likely won't meet again this season due to Colby's injured left oblique, but soon enough, round two will be in the mix.
If it came down to an MMA fight, though, Cory seems pretty confident he could take his older brother.
"We've fought a couple times over the years," he laughed. "I'd like to square up and see what happens."
With files from Rob MacLeod