Is being at home an advantage, or just a burden in disguise?

As British diving star Tom Daley prepared to face China's Qiu Bo on Saturday, four-time Olympic gold winner Guo Jingjing - the world's most successful diver - pointed out that competing at home brings greater pressure.

"It's very hard to predict (who will win), especially at the Olympic Games," Guo said.

"(Daley's) performance could be really good, but underperformance is also possible because of the stress. There are definitely home-turf advantages, but also the disadvantage of additional pressure."