Vasyl Lomachenko will provide an amazing fight. I've been watching him since 2008 Olympics and I am still pinching myself at the fact that he's having his debut very soon.
I think he's the greatest amateur of all time personally. It depends how you would rate someone who:
1. In 2008 Olympics won the Val Barker Trophy for the most outstanding boxer and avenged the only loss of his career in a complete masterclass against a top fighter in Albert Selimov in that same tournament.
2. In 2009 World Championships, only conceded 7 points in the whole tournament, beating very good fighters like Vodyapanov, Valdez etc. WITH A BROKEN HAND which actually left him out of boxing for a while afterwards.
3. Had to move up to a weight that he's a little too small for (lightweight) because featherweight was removed from amateurs. He yet beat everyone he fought, from great amateurs like Valentino to Cuban Greats like Toledo, and even beat the 2012 light welterweight, yes, light welterweight Olympic Silver medalist in 2011 when he's debuting in 2013 at 126lbs.
4. Has an amateur career record of 396-1.
...All with a very pro style.