Andrew Flintoff's former England captain Michael Vaughan - who is trying his own hand at a different physical test on the Strictly dance floor - has led Twitter praise of his old teammate.
Former England batsman Adam Hollioake, who entered the worlds of professional boxing and mixed martial arts after his cricket career ended, singled out Flintoff's strength in fighting back to claim victory.
Congrats to my man @flintoff11 to win is a gr8 effort but to get off the canvas to win shows your character
While celebrity Flintoff fans also weighed in with their own compliments:
Andrew Flintoff has described his first boxing fight as an "out of body experience" after beginning his professional career with a win.
Sporting several bruises from his encounter with Richard Dawson, he told reporters:
I think I got the full experience. I got the canvas. I got a black eye. And I got the win. ... It was a bit wragged and arms going - I just wanted to leave it all in that ring.
Andrew Flintoff said he will use pre-fight nerves to his advantage for his professional boxing debut in Manchester.Read the full story ›
Former cricketer Andrew Flintoff weighed in at 15st 6lb today ahead of his professional boxing debut against American Richard Dawson at the Manchester Arena tomorrow.
The 34-year-old lost three-and-a-half stone for the fight, while his competitor is two stone heavier.
Flintoff told reporters at a press conference today: "The wonderful thing about Twitter is I didn't realise how many people wanted to punch me! I get offers left, right and centre now.
"There's a lot of people who are passionate about boxing and they want to protect it, but hopefully they'll see with what we've done ... hopefully it will attract different spectators to boxing and it will show boxing for how hard it is, the sacrifices that fighters make and the journey they go on."
Ex-England cricket captain Andrew Flintoff is aiming to become a big hitter in sport once more - as a heavyweight boxer.Read the full story ›
Former England cricket star Andrew Flintoff has told ITV Wales his hatred of long bike rides will not stop him honouring the memory of former Surrey batsman Tom Maynard.
The 23-year-old died in June when he was hit by a London Underground train.
Flintoff is joining Maynard's father Matthew, a former England international, on the 160-mile charity ride from Cardiff to London.