Roger Federer is no longer a billionaire after seeing a major price crash in sports brand On. As detailed last year, Federer joined the 10-figure club with a net worth of $1.1billion (£813million), according to Forbes. However, on Tuesday, Federer lost his billionaire status when On's company share price plummeted by over 20 per cent. Fellow former tennis player Ion Tiriac ($2.3bn - £1.5bn) became the first to hit 10-monetary figures in 2007 when he began investing in real estate, car dealerships and financial services. All of his off-court income allowed him to become the world's highest-paid tennis player for 16 consecutive years.