"Shut your f---ing mouth," he screamed at a rival player, who is gay. Then he followed it with a homophobic suggestion.
Lengyel covered his mouth and widened his eyes, as if realizing what he'd done, but it was too late. He had shouted this live on his personal stream.
So on Friday - barely a week after setting a milestone in the history of competitive video games - the Overwatch League suspended and fined one of its top players over a base slur. And this, in short, is the eSports dilemma: sophisticated games, often spoiled by players who act worse than children.
Lengyel apologised for his outburst. "Gonna chill a little," he wrote on Twitter Friday, as his team announced that he would have to sit out rest of the tournament's first stage.
But it's telling that the player he insulted, Austin "Muma" Wilmot, didn't seem surprised that a man he called a "homophobic piece of garbage" was representing Overwatch to the world, playing in the same elite league as himself.
"I really don't care," Wilmot said on his own stream.
Before the league existed, both Lengyel and Wilmot learned to play Overwatch exactly like tens of millions of other people: in randomly assigned matches on Blizzard Entertainment's servers, where it's common to hear homophobia, misogyny, racism and naked rage over the voice lines, and rare to hear of anyone being seriously punished.
The behaviour is so common in Overwatch, and most multiplayer games, that there's a colloquialism for it: "being toxic." Blizzard has tried many times to abate the problem. And now that it's trying to take Overwatch pro, some wonder how it will keep the poison from spreading.
"These players are young, ranging in age from 18 to 22, and new to the bright, artificial lights of a corporately owned and operated competitive scene," Kotaku wrote after Lengyel's suspension. "This recent string of incidents seems to suggest that everybody - Overwatch League players, organisations, and [publisher] Blizzard [Entertainment] - have some growing up to do."
As Kotaku noted, this was not Lengyel's first outburst - even if it was the first to involve accusations of homophobia. He had such a bad reputation for toxicity that he wrote an apologetic note to his fans last summer, but he didn't end the behaviour.
"It's kind of part of his Overwatch personality," said Jason "Dibz" Chiu, who streams the game for a living. "I think he would have said it even if the player wasn't homosexual . . . The community is quite toxic, and if the pros are doing it, everyone else feels 'if they can get to that level and act that way, I can too.' "
Chiu has watched with interest, and some optimism, as Blizzard tries to crack down on the problem in time for its esports debut.
Lengyel is almost a case study. His Overwatch account was finally suspended for abuse in November. It was so unexpected that Lengyel's mouth fell open when it happened in the middle of a streaming session. And while it only lasted three days, some noted that was an unusually harsh punishment in Overwatch.
Still, the suspension didn't seem to have much effect. A few weeks later, a video circulated showing Lengyel throwing nonprofessional matches - essentially forcing his team to lose by playing as a stationary turret when they were trying to assault an enemy base.
He was a member of Dallas Fuel by then, though the tournament had yet to begin, and the team suspended him for a week.
Lengyel apologised, again, and this time blamed grueling 16-hour practice sessions for making him short of temper.
"It's not because I'm a bad person," he said. "After long days and being strained from ranked play, and the pressure, I tend to just let go. That's not good. I should have just turned off the computer and done something else."
With millions watching the tournament, it's now been turned off for him.
