Stories tend to get confusing. Truth is, Votto went to the National in June of 2001, a full year before he was drafted, so every MLB club saw him.
At that event every MLB club had scouts in attendance. Also, over half of the 30 scouting directors were there as well as pretty much every top college program and 5 months before the early signing period. So every MLB scouting department saw Joey Votto a full year before the draft. Typically MLB clubs only invite those to their MLB Stadium predraft workout who they consider good draft picks. Unknowns wouldn't be invited. I do believe that he became a second rounder that day.
Votto was a 3B back in 2001. I believe he ended up being drafted by the Reds as a catcher. He did not play for any of the Canadian high profile programs. That was why he was so unknown early on. It sure doesn't surprise me that the coaches at Coastal were among the first to recognize Votto's ability early on. They are among the best at that.
There were only 124 players at that PG National, 18 ended up being drafted in the first round. Several others, including Votto, were drafted in the 2nd round. Here are some of the kids who were at that 2001 National at Tropicana Field and have appeared in the Big Leagues.
Jeff Clement
Prince Fielder
Alex Gordon
Scott Kazmir
Jensen Lewis
John Mayberry Jr
Lastings Milledge
Scott Moore
Cliff Pennington
Shane Robinson
Jarrod Saltalamacchia
Gabby Sanchez
Sergio Santos
Denard Span
BJ Upton
Joey Votto
BTW, scroll down a bit on this link to Matz. He also was at a PG National at the Metrodome a full year before being drafted.
Matz