David Haye has called time on his 16-year professional career, but was finished as a serious threat at heavyweight a while ago.
The Hayemaker, who finished with two successive stoppage defeats to English rival Tony Bellew, was hampered by injuries for the last six years and after being stopped in the fifth round by Bellew on May 5, Haye has decided to stay on the safe side of the ropes and concentrate on promoting rather than fighting.
"They say you can't play boxing," Haye said in a video posted on social media.
"As I reviewed my life and physicality its not what it needs to be to compete on the world level as a heavyweight or cruiserweight.
"The boxing gods will no longer bless me with that freakish power and speed I've had since a kid. It's gone now and it's time to bow out of the game. I'm happy and healthy and my family are financially secure, so it's job well done."
Haye's announcement was expected.
There were calls for Haye to hang up the gloves after Bellew stopped him in the 11th round in March last year and a second crushing loss ended Haye's slim hopes of earning a world title shot against IBF-WBA-WBO champion Anthony Joshua.
Haye (28-4, 26 KOs), from Bermondsey in south London, retires after winning world titles at heavyweight and cruiserweight, but ends a bit unfulfilled due to injuries.
"In the past five years I have snapped [fully ruptured] both biceps, my rotator cuff and my Achilles tendon," Haye said in a statement.
"All four injuries were potentially career-ending and each of them required operations with months of intense rehabilitation.
"The biggest physical challenge I had to face, however, was a spinal surgery in March 2015. I herniated a disc in my lower back 10 years ago and years of intense training wore this disc away.
"This caused fragments of disc to push into my spinal nerve passage, resulting in chronic pain and loss of function in both legs, and an operation was required to put a two-centimeter metal cage between two vertebrae and implant two metal rods with screws and bone grafts to fuse it all together.
"I went into surgery 191 centimeters tall and came out 193 -- not a bad silver lining! -- but literally had to learn to walk again. This made my comeback fight against Mark de Mori (in January 2016) all the more meaningful, as it was only 10 months after such intrusive spinal surgery."
After losing to Wladimir Klitschko in a world heavyweight title unification fight in 2011, Haye's career was dictated by injuries.
Before he fought Klitschko, Haye was considered one of the sport's most exciting fighters with his knockout power.
He won three world cruiserweight titles (WBC, WBA and WBO) with stoppage wins over Jean Marc Mormeck in 2007 and Enzo Maccarinelli in 2008.
When Haye stepped up to heavyweight, he made quick progress and his 2009 win over Russian giant Nikolay Valuev for the WBA crown is perhaps his finest moment. Haye gave away nearly a foot and seven stones in weight to Valuev, who he outpointed in Germany.
Defences against former titleholder John Ruiz and Audey Harrison followed, before the 2011 unification fight with Klitschko. Haye went into the Klitschko fight with an impressive (25-1, 23 KOs) record, but was not aggressive enough and afterwards blamed defeat on an injured little toe.
Haye has never been his explosive self since demolishing Dereck Chisora in July 2012.
"On reflection, my 16-year, 32-fight professional career was one of two halves," Haye said in a statement.
"In the first eight years, everything ran smoothly. I had 25 fights and became the first ever British boxer to unify the cruiserweight division.
"Yet it was in the second half of my career where I really discovered what it meant to fight and be a fighter.
"If I had it my way, I would have fought as many as 16 times in the second half, the last eight years. But, unfortunately, during this time my faulty body only allowed me to step through the ropes on seven occasions - four wins, three losses - and often it was a fight just getting to the ring in one piece."
The list of injuries is long. Even before Haye turned professional, injury officially forced him to stop competing in the 2002 Commonwealth Game in Manchester.
Haye also pulled out of facing Klitschko 17 days before he first supposed to fight him in June 2009, citing a back injury suffered in training.
Haye had to cancel a fight against Germany's Manuel Charr with a hand injury in May 2013 and then a fight against English rival Tyson Fury was postponed after the Londoner suffered a cut in sparring in September 2013.
Haye pulled out of facing Fury again in November 2013 after a five-hour operation to rebuild his right shoulder resulted in surgeons advising him to retire.
Haye only resumed his career in January 2016, after last boxing in July 2012, and following two easy warm-up wins faced Bellew last year. Haye felt he was winning the fight until he ruptured his Achilles halfway through and was stopped in the 11th round.
The rematch was postponed from December because Haye injured his biceps in training and when he faced Bellew last month it was following surgery on his Achilles and biceps. But Haye insisted in his lengthy retirement statement he "did not walk to the ring injured, nor injure myself during the fight".
As well as the injuries, there was also the trash-talking and a violent brawl at a post-fight press conference with Chisora in 2012 that Haye will be remembered for.
But above it all, Haye should be remembered for bringing excitement to the ring that saw him win world titles at heavyweight and cruiserweight.