I think he underestimated Nelson in the 2nd fight and he did not handle the Drawn decision in the first fight very well. One flaw with Fenech was his temperament, he never recovered from the KO and his hands were a mess as well. He had a long lay off before the Grove fight and although winning this fight he got nailed and that was the end of his career. Holiday then made a mess of him a couple of years later.