(CNN) -- One of the men shot and killed at a gaming tournament in Jacksonville, Florida, on Sunday had won the national tournament, the Madden Classic, two years ago.
The other was a former high school football player who loved to play the online version of his favorite sport, and had won $51,000 in his short gaming career.
They both died in the shooting at the GLHF Game Bar Sunday, where they were attending a tournament for competitive players of the football video game, Madden. The winners would go on to a higher level tournament in Las Vegas in October, where large cash prizes could be won.
Nine other people suffered gunshot wounds and two people were injured fleeing the area, the Jacksonville Sheriff's Office said. The gunman then turned his weapon on himself.
While the sheriff's office has not identified the two who were killed, their names have been widely reported on social media by people who were at the bar, members of the gaming community and others.
One of the victims, Taylor "spotmeplzzz" Robertson was identified by his gaming sponsor, Dot City Gaming.
"We are shocked and deeply saddened by the senseless violence in Jacksonville and the tragic deaths of Dot City Gaming team member, Taylor "SpotMePlzzz" Robertson, and Eli "True" Clayton," the sponsor said in a two-part tweet.
"They were great competitors and well-loved members of the Madden community. Our thoughts and deepest sympathies go out to their families, loved ones, and all of those affected by this tragedy."
According to his player profile on EA Sports, Robertson was from Ballard, West Virginia. He was 27 years old, had career winnings of more than $80,000 and had won the Madden NFL 17 Classic. Sunday's tournament was a qualifying round for the Madden NFL 19 Classic.
The other victim, Eli "trueboy" Clayton, a former high school football player, was identified by the Calabasas High School football team in California.
"Our hearts are broken as we learned that former Calabasas Football player @True__818 (Elijah Clayton) was senselessly murdered today during the mass shooting in Florida. We send our love, condolences, and deepest sense of sorrow to Elijah's Family and Friends," the team tweeted.
Clayton, 22, was from Woodland Hills, California. He also went by "true," according to his EA Sports player profile.
"True is consistently one of the best in competitive Madden," the biography on his profile page said.
Gunman David Katz, a 24-year-old gamer from Baltimore, Maryland, was in Jacksonville for the tournament. He used at least one handgun in the shooting, Jacksonville Sheriff Mike Williams said. Police have not released a possible motive.