The opener raised hopes of a new mark with an amazing start against South Africa in Sydney on Sunday, his 88 coming from just 66 balls.

"Some player around the world will do it one day but you'll need everything going right," said Gilchrist.

"The moment you think about it and try to get it you'll probably find yourself getting out."

The highest score in a limited-overs international is former Pakistan opener Saeed Anwar's 194, hit against India in Chennai (Madras) in 1996-97.

Gilchrist is one of seven players to have passed the 150 mark more than once, with three West Indians -- Viv Richards, Brian Lara and Chris Gayle -- doing so three times.

After a Gilchrist-inspired 57-run defeat, South Africa captain Graeme Smith tried to remain upbeat despite the fitness worries that have depleted his attack.