His name is Alexander Gvozdyk and i remember him well from London 2012 where he won the bronze medal at light heavyweight. I had put a bit of money on him to win the gold at good odds (around 20/1 IIRC) but he was the victim of a controversial decision in his semi final loss to Kazahkstan's Adilbek Niyazymbetov.
Many thought that Gvozdyk did enough to win and the Kazahk was the recipient of more than one favourable verdict throughout his run at the Games.
Niyazymbetov (not a name you want to have to spell regularly) went through to the final but lost to Egor Mekhontsev of Russia, who has also recently turned pro with Top Rank, and in the same 175lb weight class as Gvozdyk.
From the article:
"Gvozdyk joins Top Rank's stable of Olympians, including two-time gold medalists Zou Shiming of China and Vasyl Lomachenko of Ukraine, gold medalists Ryo Murata of Japan and Egor Mekhhontcev of Russia, and silver medalist Esquiva Falcao of Brazil, as well as American Jose Ramírez, Puerto Rican Felix Verdejo and Mexican Óscar Valdez."
I look forward to watching all of these guys progress in the pros and i think the next few years could get very interesting at light heavy especially (even more so than they are now), with the established guys, chiefly Adonis Stevenson and Sergei Kovalev, being joined by Mekhontsev, Gvozdyk, and Russia's Artur Beterbiev (2009 World Amateur Champion, 4-0 (4) as a pro), along with the possibility of other top fighters such as Andre Ward and Gennady Golovkin moving up in weight.
There is some history from the amateurs between Kovalev, Mekhontsev and Beterbiev (all Russian) too, with Beterbiev beating both Kovalev and Mekhontsev in the unpaid game.
How things will turn out in the pros we will likely find out at some stage.
Here are links to the article and also to a fanpost i did the other week on the signing of Mekhontsev: