* Myanmar coach criticises team, apologises for 'disaster'
* Panama goalkeeper saves two penalties against Austria
* Ghana beat pre-tournament favourites Argentina
* U.S. demolish hosts New Zealand (Updates with late results)
By Greg Stutchbury
WELLINGTON, June 2 (Reuters) - Myanmar's under-20 World Cup 'party' came to a crashing halt on Tuesday when they were hammered 6-0 by Ukraine, with all six goals coming in the second half, prompting the Asian side's German coach to apologise to their fans.
Myanmar, who qualified for the tournament for the first time by reaching the Asian under-19 championships semi-finals on home soil last year, had given the United States a massive fright in their opening game on Saturday before eventually losing 2-1.