Trent Sainsbury has never had much luck with injuries.
The Socceroos defender missed the World Cup after fracturing his kneecap on a sprinkler on his debut at PEC Zwolle in the Netherlands.
At Central Coast before that, he was plagued by a hip complaint that medics struggled to treat.
But his latest problem tops it all - a hamstring pain that club doctors don't think is a hamstring problem, but can't diagnose it as anything else.
"No one really knows what it is," he says.
"I have really strange injuries ... I'm getting used to the chaos of it all."
Sainsbury has recovered enough to earn a recall to the Socceroos squad, despite barely featuring in the Dutch league and not being used in Australia's last two internationals.
A program focussed on core fitness rather than his troubled hamstring improved his fortunes, and the 23-year-old says it's worked wonders.
"Because nobody could really identify what the injury was, it was sort of a hit and miss, tick off the things that didn't work," he said.
"I'm at a point now where I'm probably the strongest I have been in my career.
"I feel quick ... I feel better than I did at the Asian Cup."
Sainsbury has played in reserve team matches for Zwolle but has played just nine minutes for his club this season, battling to make it from the bench due to his club's hot streak of form.
Zwolle are just two points off Ajax Amsterdam in top spot, which means Sainsbury must wait for his chance.
With the waiting has come plenty of time to reflect on how those injuries have changed him.
"It's made me look at myself as not so indestructible; when you're a youngster you can do everything," he said.
"You get one injury, it leads to another and before you know it, you're crumbling.
"It's been a tough time but that's football I guess."