As the curtain rises on the 31st Olympics, the prospects for a memorable games in Rio de Janiero are uncertain. Not every venue is finished, the lengthy no-show list starves the event of some big names, water quality where sailors, ocean swimmers and board-riders will compete is a health hazard, and the famous Copacabana Beach, site of the volleyball arena, flooded in recent heavy rains.
Worries about the Zika virus, political corruption, the Russian doping scandal, alarming levels of violence and warnings to spectators to avoid no-go areas have cast a pall over the hectic final sprint to today's opening ceremony, which is unlikely to feature the nation's suspended head of state, Dilma Rousseff.
She faces impeachment proceedings. Her chief political rival, who is expected to bask in the front row today, refused to let her into the VIP Olympic Stadium suite, offering instead "the stands below him". She was unimpressed, saying she did not intend to take a back seat.
It is as though Brazil is out of the medal race before the starter's gun has fired. And that seems a harsh way to judge the inaugural South American Olympics, and the first held in a developing nation.
Already there are signs the International Olympic Committee has got cold feet locating future Games in an emerging economy. Africa and India may be casualties of Rio's problems, despite the optimism that greeted the selection of the big, vibrant city in 2009.