Golf: Spieth latest star to pull out of Olympics, world's top four won't be in Rio

TROON, Scotland (AFP) - World No. 3 Jordan Spieth became the latest leading golfer to decide not to play at the Olympics next month, the International Golf Federation president Peter Dawson announced on Monday.

The 22-year-old American, who dominated the sport last year winning the Masters and the US Open, joins other superstars like world No. 1 Jason Day of Australia, No. 2 Dustin Johnson of the United States and No. 4 Rory McIlroy of Northern Ireland in opting not to play on what is the sport's return to the quadrennial sporting showpiece after 112 years.

Most of those who have decided not to play have cited concerns over the mosquito-borne Zika virus.