Looking at Steve Collins record it looked impressive with wins over Benn and Eubank albeit not in there primes but 2 greats

around that time I was very busy and couldnt follow boxing as closely as I did previously or as I do now.. but 3 losses all early on and retireing with a good string of victories, did he have a career ending injury? or did he walk away on his own? or was he at the right place and right time?

Thanks