Yeah he did. A pretty highly regarded Humberto Soto who a lot of people wanted to see fight Pac.

Back on the subject of Valero. Part of what made him such a phenom, in addition to his knockout streak, was his high profile sparring sessions. Here is one of them with Bobby Pacquiao conquerer Urano Antillon. It's old but, given Urbano's big win, it's worth another look.

http://www.youtube.com/watch?v=3lSag1bYcUs
So impressive is Valero in these sparring sessions, makes me think he can box a little.