In the Craig Cummings fight in 1997 , Collins last , at Glasgow's Kelvin Hall, Collins was knocked down in the first 15 seconds of the fight . Cant of been a good sign.
from wikipeidia In 1999, he announced his decision to come out of retirement in order to fight Roy Jones Jr. Jones is said to have offered in excess of £3 million for the fight. Collins is said to have been suspicious regarding the money that Jones was offering and said to the papers that "for £3 million I would fight Mike Tyson"; this only spurred the spin doctors to assume it was a challenge at Iron Mike. Controversy surrounded the fight as it was rumoured that Collins would have to fight Calzaghe first before a showdown with Jones. Collins had accepted this and started to prepare to fight Calzaghe. In his preparation training for the fight that was never to be, Collins collapsed during sparring. When doctors told him that blows to the head could result in his death, he retired for a second time. He is reported to have stated in Boxing World that he has spent so long chasing Roy Jones Jr that money was not an important factor any more and that he would "fight him in a phone box in front of two men and a dog". Collasped in sparring ? , guess he retired on medical grounds.