Las Vegas, NV   ---  Unbeaten (20-0) Mexican Heavyweight Andy Ruiz works out with trainer Jeff Grmoja in Las Vegas as he prepares for his upcoming feature fight in Macau, China.  Ruiz, rated #6 is  taking on Tor Hamer of New York on the undercard of Pacquiao vs Rios. Pacquiao vs Rios will battle at The Venetian Macao Resort in Macau, China and will be televised live in the US, Saturday, Nov. 23, 9pm ET/6pm PT on HBO Pay-Per-View.  --- Photos by Mary Ann Owen/Top Rank.