The boxing world remains in euphoria, five days after Floyd Mayweather and Manny Pacquiao finally signed a contract to fight each other in a bout on May 2 in Las Vegas that will, quite literally, generate hundreds of millions of dollars.

But Wednesday is the 20th anniversary of another memorable fight, one that far too many in and around boxing have forgotten about.

On Feb. 25, 1995, in London, WBC super middleweight champion Nigel Benn stopped WBC middleweight champion Gerald McClellan in the 10th round of their fight. The powerful McClellan had knocked Benn out of the ring in the first, and knocked him down again in the eighth, and several times appeared on the verge of a knockout victory.

But Benn survived and turned the tables in the 10th. He knocked McClellan to a knee twice in the 10th round. McClellan couldn't resume the fight, and Benn won by TKO. McClellan had trouble walking to the corner and collapsed, where he lost consciousness.

Doctors removed a blood clot from his brain, but he suffered irreversible damage. He is now blind, nearly deaf and has great difficulty walking. He requires care 24 hours a day. He is nothing like the vicious puncher who compiled a career record of 31-3 with 29 knockouts. He needs assistance for the most basic tasks.

View photos Gerald McClellan (L) is now 47 and is with his sister, Lisa, who is his primary care-giver. (Photo courtesy Lisa McClellan) More

His sisters, Lisa and Sandra, have essentially given their lives over to him and care for him full-time. He is on permanent disability and receives a government check, but it's nowhere near sufficient to pay for his care. Lisa, who was a care-giver at a nursing home, quit that job so she and Sandra McClellan could take care of their brother. They each receive pay for five-hours a day from the state of Illinois, where Gerald lives, to take care of his every need.

She said she has no issues with boxing and is happy that Mayweather and Pacquiao are earning so much money from their fight that they'll be able to set up future generations of their families for years to come.

But she doesn't understand why so many connected to the sport have forgotten Gerald, or why there isn't a plan in place to care for the likes of her brother.

"Life would be easier if there were some sort of pension or insurance given to the boxers to try to protect them," Lisa McClellan told Yahoo Sports. "Those would be things I'd love to see and they'd make things easier for us. But it's not just us I'm talking about. It's all the boxers. I wish there were a way that some of this money that is out there could be put aside for a pension for the boxers or to help them in cases like this."

Lisa McClellan is putting together a fund-raising dinner, "An Evening Honoring the G-Man," on March 28 at the Masonic Temple Ballroom in Freeport, Ill. She said she no longer allows herself to be sad and said she looks at it as a blessing that her brother is still alive, because so many fighters have given their lives in the ring.

Still, she is disappointed at the response from the boxing community. One of their own has fallen and is in desperate need, but the response these many years later hasn't been all that swift.

"Putting this dinner together, it's been frustrating trying to get boxing involved," she said. "It is kind of a slap in the face that Pacquiao and Mayweather can generate so much money for one payday, but for not just Gerald, but other fighters in similar situations, it's such a big struggle to get through each day. It is kind of like a slap in the face."

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