Australia's big five on day 15 in Rio

FIVE KEY EVENTS FOR AUSTRALIA ON DAY 15 IN RIO:

SPRINT CANOEING

MEN'S K4 1000M FINAL 10.12am (2312 AEST)

Jacob Clear, Ken Wallace, Riley Fitzsimmons and Jordan Wood defend Australia's gold medal, but face a tough task against the world champion German four who beat then by almost three seconds in their opening heat.

MEN'S K1 200M 9.07am (2207 AEST)

West Australian Stephen Bird is a surprise finalist and is an outside chance of a medal.

ATHLETICS

MEN'S 1500M FINAL (2100, 1000 AEST Sunday)

Ryan Gregson is the first Australian man since Graham Crouch in 1976 to run in the Olympic 1500m final. A medal will be a big ask.

WOMEN'S TRIATHLON (1100, 2200 AEST)

The sport Australia introduced to the Olympics in Sydney to win lots of medals hasn't quite turned out that way. Australia's three women are headed by London bronze medallist Erin Densham and Beijing bronze winner Emma Moffatt, while Ashleigh Gentle is probably in the best form after a second place at a recent World Cup round in Montreal.

MODERN PENTATHLON

MEN'S EVENT (1400, 0300 AEST Sunday)

At his first Olympics, 19-year-old Max Esposito must surely be inspired by the surprise gold medal won by his big sister Chloe on Friday.