Uzbekistan's Bektemir Melikuziev took less than two minutes to knock-out Georgian veteran Kvachatadze Zaal in the middleweight division ©AIBA/Facebook

"Photo_Gallery"

American heavyweight Joshua Temple was one of two fighters to record a TKO victory on the opening day ©AIBA

Irish light flyweight Brendan Irvine recorded a 3-0 points victory against the United States' Nico Hernandez ©AIBA/Facebook

British light flyweight Harvey Horn got the better of Glasgow 2014 Commonwealth Games silver medallist Devendro Laishram of India ©AIBA/Facebook

Azerbaijani light flyweight Rufat Huseynov saw off the challenge of Morocco's Imad Ahyoun ©AIBA/Facebook

Mongolian bantamweight Iderkhuu Enkhjargncl had his hand raised in victory after a hard-fought battle with Venezuela's Jose Diaz Azocar ©AIBA/Facebook

Irish light welterweight Dean Walsh missed out on a place in the next round despite causing Venezuelan opponent Luis Arcon Diaz plenty of problems ©AIBA/Facebook

Light welterweight Thulasi Tharumalingam delivered the goods for host nation Qatar ©AIBA/Facebook

There was disappointment though for Tharumalingam's compatriot Alhadi Abdulrahman as he lost to Venezuelan middleweight Endry Saavedra Pinto ©AIBA/Facebook

The opening day's action concluded with a points victory for Polish heavyweight Igor Jakubowski to the detriment of Tajikistan's Jakhon Qurbonov ©AIBA/Facebook