His diving, one-handed catch on Friday had teammates and coaches gushing.
But there have been several other highlight plays from the physical, 6-foot-3, 212-pounder -- including this short pass that turned into a big gain when Thomas shoved his way past two defenders Sunday:
Among those who caught wind of the social media buzz was Thomas' uncle, Keyshawn Johnson, who tweeted out his admiration on Sunday evening.
Thomas, meanwhile, insisted that he won't get caught up in any of these early accolades.
"I feel like I can get better every day," said Thomas, who refused to give himself an early grade in camp. "Take good notes, watch film, ask questions, talk to guys like [Brandin] Cooks, talk to Drew [Brees]. I feel like I still can develop. …
"Keep building on [the praise he has been receiving], don't let it go to my head. Now that's what they're probably going to expect from me, so I'm probably gonna get another opportunity to make that play. So be ready when it presents itself."
Thomas backed up that humility on Sunday when he made a rare misstep -- jumping for a false start -- then took off running off to the side of the field as self-punishment.
"That was my idea. I let the team down," Thomas said.
Make no mistake, though, Thomas isn't too humble. His Twitter handle is @Cantguardmike for a reason.
"Some people might say it's like cocky or something. It's not cocky, that's just how I approach the game," Thomas said. "When I line up one-on-one, in my mindset as a receiver, I feel like no one can cover me if I do my job."
That was Thomas' mindset on his spectacular one-handed catch Friday, when he lunged for a deep ball from Luke McCown down the left sideline, reached out with his left arm and reeled it in before hitting the turf.
"The ball was in the air. I feel like when the ball's in the air, covered or not, I trust my ball skills over whoever is covering me," Thomas said. "I take a lot of pride in my ball skills. So if I can get my hands on it, I want to make a play. And the quarterback threw it out there, and he trusted me to make a play. He threw it out there for a reason, so I had to complete it."
As of now, Thomas should probably be penciled in as the Saints' No. 3 receiver behind starters Cooks and Willie Snead. However, he could become even more than that if he keeps making plays at this rate.
Either way, Thomas should emerge as a top red zone target with his size, his physicality and his ability to pluck the ball -- with one hand or two.