Jaron Ennis’ welterweight days are officially over.

Eddie Hearn, Ennis' promoter, has enjoyed watching him wreak havoc on the 147-pound division. However, after sitting down with several experts, he’s been persuaded to change weight classes.

"Boots is moving up," Hearn told FightHype.com. "Unfortunately, after the [Eimantas] Stanionis fight, he had his team around him, the doctors, the tests, and what they're basically saying is Boots underperforming to his capabilities."

Ennis, 27, had an opportunity join the junior middleweight division a few months prior. If he had decided to make the move to 154 then, a fight with Vergil Ortiz Jr. would have been his first outside of 147. He contemplated it heavily, but felt it premature.

At the time, Ennis (34-0, 30 KOs) held just the IBF title, and he was vexed by the unwanted attention it brought him. Ennis never got the chance to peel that title off an actual champion. Instead, he was elevated.

The Philadelphia, Pennsylvania, native wanted to rip a belt from a champion before leaving the welterweights behind, something he was able to do roughly two months ago.

On April 12, at the Boardwalk Hall in Atlantic City, New Jersey, Stanionis endured a brutal beating. Ennis, for six consecutive rounds, punished the Lithuanian, forcing his corner to wave the white flag. He added Stanionis’ WBA strap and the vacant Ring title to his collection.

From his ringside seat, Hearn couldn’t fathom what he was watching. At no point did he believe Stanionis would win, but a competitive fight? That seemed plausible. As the longtime promoter reflects on that special night, he’s even more impressed. Not only because of the reverence he has for Stanionis but when he factors in that Ennis likely wasn’t at his best, Hearn’s mind is blown.

“The amazing thing is, he did that to Stanionis at 50% of his physical capabilities," Hearn said.

Ennis made it clear that he wanted to aggregate more titles, meaning fights against Brian Norman Jr. and Mario Barrios were priorities. In addition to that, the dealt with the constant callouts from 140-pound titlist Teofimo Lopez.

He realized one of two things. Either getting his fellow champions in the ring would be too difficult, or getting those fights would include too much waiting.

It’s unclear who Ennis could face next, but if his ambitions are the same he’ll target every 154-pound champion and notable name. As for what will now become of those titles he worked so hard to get, Hearn anticipates that Ennis will release them.

“It’s very likely that those belts will become vacated. We’re going to meet this week.”