The Internet troll who got his face BLOWN UP in a real-life fight with boxing champ Deontay Wilder last week claims it was just a "lucky punch" ... and wants a rematch to prove Wilder's just a "phoney."

"I was caught off-guard. He just got lucky," Charlie Zelenoff tells TMZ Sports.

We broke the story: Wilder put a serious hurtin' on wannabe fighter Charlie Zelenoff in a Hollywood boxing gym last week. Wilder claims Charlie had been harassing him through texts, phone calls and online for years - calling him the n-word and threatening to harm his daughter.

Zelenoff didn't deny the harassment -- in fact, he documented some of phone calls on YouTube -- but insists he's not a racist.

"A lot of my friends are black," Zelenoff says ... "I just hate Wilder as a person. He's a phony. I'm the best"

Zelenoff says he wants a rematch with Wilder to prove the knock-out was just a fluke -- even though Deontay claims he made his point and WON'T fight the guy a second time.

Don't worry, Charlie has a Plan B -- "Bring on Floyd Mayweather Jr. ... I've got something coming for him too."

*This article provided to Doghouse Boxing from our friends at http://www.tmzsports.com/

Also recent from by TMZ:
Pacquiao bumps into Justin Bieber while dropping $20k
Chris Brown Trained to Fight w/ Boxing Champ Andre Berto
Kassim Ouma Jailed - K.O.'s Guy Over Alleged Gay Passes
Dewey Bozella - 'Hurricane' Carter Inspired Me
George Foreman - Bernard Hopkins Should Retire
Mayweather & Miss Jackson - We've Broken Up FOR GOOD!
Danny Garcia - 1st Thing I Do After a Fight... HAVE SEX!
'Black Dynamite' Star - I'd Beat Floyd Mayweather In an MMA
Andre Berto - TMZ Exclusive - "It's brutal man, it's brutal"
Floyd Jr. - New Million Dollar Watch...
Floyd Mayweather uses Justin Bieber Music to inspire
Floyd Mayweather Jr. Accusers - Injury Photos
Floyd Jr Allegedly Involved in Kidnapping & Brutal Beating
Mike Tyson has Priceless Financial Advice for Antonio Tarver
Antonio Tarver Arrest Details & Mug Shot - TMZ Exclusive
Pernell Whitaker's Mom: I Can't Believe He EVICTED Me!
Floyd Mayweather Sr vs. Roberto Guerrero - TMZ Exclusive
Roy Jones Jr. - I'm Running for Mayor! - TMZ Exclusive
Pacquiao: Yes, I Eat Aborted Duck Fetuses / Cooked Alive
Kelly Pavlik HOSPITALIZED... After Collapsing at Court
Kelly Pavlik Arrested! Cabbie: 'That Drunk F*** Ripped Me Off!'

Tune in to TMZ on TV weekdays Monday through Friday (check http://www.tmz.com/when-its-on for syndicated/local listings at the bottom of the page)

Visit the TMZ Store: http://tmzstore.com

Tune in to TMZ on TV weekdays Monday through Friday (check http://www.tmz.com/tmztv/ for syndicated/local listings).

This article provided to Doghouse Boxing by our good friends at TMZ.com.

For much more Boxing news updates, visit the home page HERE at Doghouse Boxing. Also make sure to follow Doghouse Boxing's news wire