Julian Savea's weight problems, which have caused him to be dropped and recently brought back into the fold by Hurricanes coach Chris Boyd, will be a concern for the player and the franchise but also All Blacks coach Steve Hansen.
Unfortunately, all parties have been here before. Last year, as the Hurricanes eased their training load during the latter stages of their road to the Super Rugby grand final against the Highlanders, Savea's weight went on the rise, due to, apparently, a lack of physical activity and less than optimal diet.
It affected his form and the All Blacks responded by not selecting the wing with one of the best strike rates in world rugby until the third match of the Rugby Championship - against Australia in Sydney.
It was decided that the now 25-year-old needed a wake-up call - and a gruelling three-week fitness regime with All Blacks trainer Nic Gill - in order to get him in the best possible shape for the Championship and All Blacks' World Cup defence, and he didn't disappoint in the latter, scoring a hat-trick of tries in the quarter-final victory over France in Cardiff in a performance which once again led to comparisons with Jonah Lomu.
Unfortunately the lessons haven't been learned. Boyd was forced to drop Savea for the Southern Kings match in Wellington a fortnight ago but after seeing him put in the requisite fitness work since, including during the team's recent bye weekend, the 106kg wrecking ball who has scored 38 tries in 41 tests will play against the Jaguares in the capital on Saturday.