Wales had to overcome monsoon conditions and stubborn opposition before getting their Cathay Pacific/Credit Suisse Hong Kong Sevens campaign off to a winning start against Japan.
The newly crowned World champions ran out 14-5 victors but had to come from behind before taking the honours at Hong Kong Stadium.
The Japanese scored first through Kilryong So but the Welsh struck either side of half-time, first through Ifan Evans and then James Lewis. A new look Wales side attempted to spread the ball but the slippery conditions made free-running rugby a lottery.
With 30 points on offer to the Cup winners in Hong Kong, the 24-team event could go a long way to deciding the outcome of the Series.
With only one side guaranteed a place in the Cup quarter finals from each pool, the onus is on every team to score as many points as possible in Hong Kong.
That means Wales must go out first thing tomorrow and rack up the points up against China in their second pool game before facing the in-form English. China were walloped 54-0 today by England and Paul John's side are fully aware the red rose army pose a major obstacle if they are to progress to the knock-out stages.
The WRU has launched a campaign to create a long term legacy for Welsh club rugby by highlighting the advantages of volunteering. Rhian Edwards, a volunteer at Seven Sisters, has enjoyed many benefits of her volunteering at a grassroots rugby club including being part of the Rugby World Cup volunteer workforce after being nominated by the WRU - and the WRU is asking for more people to develop their 'Welsh rugby roots'.
Wales head coach Warren Gatland and captain Sam Warburton say their first prioirty on Sunday in the opening game of the World Cup is to win against Uruguay and not get overly concerned with points difference.
With only days to go until the biggest rugby competition in the world begins, rugby fans visiting Cardiff this autumn will be able to enjoy a special display at National Museum Cardiff as part of the celebrations surrounding the Rugby World Cup.
Geraint John has taken up the new role of WRU elite coach development manager having arrived in Wales last week. WRU TV caught up with him at the WRU rugby department's strategy day at the Millennium Stadium.