While most men carry a small number of the genetic markers for prostate cancer, the 1% with the most genetic faults face nearly a five-fold increased risk of the disease.
In the fifth game Williams, again pitched into trouble by a pair of double-faults, faced two break points but squeaked clear of danger with what was clearly a strategy of running Davenport from side to side at speed, an exercise she is not built for and which was to have serious consequences.
The Russian opened her title defence by sending out a warning to her rivals - she hit no double-faults, faced no break points and won 89% of points on her first serve in a 54-minute win.
After four points went against her, Watson double-faulted when facing break point, and it proved to be the pivotal moment of the match.
And hit a double fault to face a break point while serving for the match at 6-5.
Fish, the leading American player, started shakily, double faulting and facing a break point in first game of match, then yielded his serve by pushing a forehand far over the baseline.
She batters a forehand past Williams for a lovely winner and looks in control at 30-15, but soon enough she's tossed in another double fault and faces another break point.
She double faulted to face a fifth break point.
