Nick Blackwell confirms his retirement.

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All the best for the future Nick. Thanks for the great fights!

@philipjperry @BoxingRegister no that's me done I can't put my friends and family and self through that again but I'll still be involved

— NICK BLACKWELL (@nickblackwell02) April 18, 2016

[FrankieClutch]

Great decision on his part. Hopefully he can still make a good living

[Zaroku]

Great choice! A man has to know his limitations!!!

[Eff Pandas]

Whats his medical status right now? Hope thats legit him tweeting. Great sign if so.

Seemed pretty obvious he was done with boxing. Imagine/Hope getting a boxing license after this situation would be impossible anyway.

[TheBoxingXpert]

That is a wise decision. He fought like a true warrior. Skills are determined by a lot of things, but the heart of a champion is determined by your inner strenght and Nick Blackwell had the heart of a champion.

[Larry the boss]

I hope he has a long healthy and productive life...

[Tom Cruise]

Had to be done.

Very entertaining career. No am background, learned on the job and got himself to being the British champion on heart, toughness and fitness. A sad end, but at least he seems to mentally all there based on his tweets. After the Magomed situation we all know that isnt a given in these situations

Could have a good career in fitness training maybe or something similar. He seems a good communicator and confident in himself too. If he can study a bit and get some qualifications I'm there will be some boxers who could use him as a motivator or fitness trainer.

[Vinnykin]

I think this was always the outcome. He's young and with the money he has made and the money raised for him he has a lot more than I've ever had in my bank account.

He can always learn the coaching side and is still young. Look at Shane Mcguigan as a good example.

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Whats his medical status right now? Hope thats legit him tweeting. Great sign if so.

Seemed pretty obvious he was done with boxing. Imagine/Hope getting a boxing license after this situation would be impossible anyway.

He wouldn't have got a license in Britain but i'm sure he could've got one elsewhere if he really wanted to. Plus he started off as a unlicensed fighter anyway, probably still got the contacts.

It's definitely him tweeting you can tell by the style, he's replying to everyone.

[emre belozoglu]

It's a shame this happened Blackwell was a handy fighter very fit and strong, he looks like he's at peace from his tweets which is good and he has plenty of options out there