Kiwis are favorites

World Series leader New Zealand is the favorite to win the Hong Kong Sevens this weekend, but in a season that has proved unpredictable there's plenty of room for an upset.

"With the atmosphere and the vibe here, Hong Kong is regarded as the biggest tournament in the world," said South Africa coach Paul Treu.

Second in the World Series overall standings, South Africa is one of the main challengers for the Hong Kong crown.