NSWIS boxer Daniel Lewis fights for a place in the Olympic quarter-finals tomorrow morning (AEST).

The middleweight faces a tough assignment against the second-seeded Bektemir Melikuziev from Uzbekistan.

He moved into the round of 16 with a hard-fought first-up win over Poland’s Tomasz Jablonski earlier this week.

He is aiming to become Australia’s first Olympic medallist in boxing in 28 years.

Warren Potent competes in his fifth Olympics in the 50m rifle prone.

He will be hoping to reproduce the form that saw him win a bronze medal at the 2008 Beijing Games.

The 2014 world champion heads into Rio in good form having won a silver medal at the World Cup event in Bangkok earlier this year.

NSWIS table tennis exponents Sally (Ziyu) Zhang and Chris (Xin) Yan will be in action in the first round of the women’s and men’s teams events.

Yan will be looking to improve on his result from earlier in the week when he was beaten in the first round of the men’s singles competition.

NSWIS diver Esther Qin makes her Olympic debut in the 3m springboard event.

She won gold for Australia at the 2014 Commonwealth Games in Glasgow and has performed strongly this year in world series events.

The Sharks are back in the pool when they take on water polo powerhouse Serbia.

Track and field competition begins with a number of NSWIS athletes featuring.

Eloise Wellings will run in the 10,000m, Anneliese Rubie in the 400m and Jenny Blundell in the 1500m.

Victoria Mitchell and Madeline Hills will both make their Olympic debut in the 3000m steeplechase.

And there are high hopes for Fabrice Lapierre when qualifying gets underway in the men’s long jump.

It is a long overdue Olympic return for Lapierre after debuting in Beijing and then missing London with a hamstring injury.

After winning silver at last year’s world championships he followed that with a second at the world indoor championships.