Talent. Probably underachieved a little.. But people forget he managed & promoted himself for large parts of his career, & went through numerous trainers too. Respectable career none the less...
I always talked sh** about Groves, but I had to admit he's a good man when he raised the money for Gutknecht's family after that terrible fight of theirs. Groves often mentioned in interviews that the fight rattled him mentally having put a guy into what looks like lifelong intensive care. I wish Groves all the best for his retirement.