Noah Lyles will be looking to make history on Thursday by becoming the first American to win the Olympic Sprint Double in 40 years.

After water quality tests showed that the Seine met standards, the women's marathon 10km swimming race went on as scheduled.

More than 30 medals will be awarded throughout the day in sports such as athletics, sailing and boxing.

What you should know about Thursday's Olympics:

Sailing GOLD

Austria's Lara Vadlau and Lukas Maehr

won gold

In the mixed dinghy race. Keiju OKADA and Miho YOSHIOKA of Japan won silver, while Anton Dahlberg (Sweden) and Lovisa KARLSSON (Sweden) took bronze.

The mixed multihull competition was won by Italy's Ruggero Banti and Caterina Banti, who beat Argentina's Mateo Majdalani & Eugenia Borsco.

Relay Scan

It was a decisive step for the United States to end their 4-x100-metre men's race

Relay drought

Jamaica was the fastest qualifier from Friday's heats, and had a ton of firepower in store for them. But after two terrible changeovers they crashed out.

After qualifying first, the U.S. Women's Team is also well-positioned to take back their title from Jamaica despite an early changeover.

SPRINT DOUBLE for LYLES

Lyles, newly-crowned world's fast man, returns to the track to attempt to add the 200m title to the 100m win he won last week.

Lyles would be the first American since Carl Lewis to have achieved the Sprint Double.

SMARATHON SWIMMING

Sharon van Rouwendaal, a Dutch ironwoman who trained with Moesha Johnston in Australia, won her second Olympic gold medal for women’s 10km Marathon Swimming.

DOPING

After Erriyon Knighon, an American track and field athlete tested positive for trenbolone (a banned substance), China's Anti-Doping Agency (CHINADA), urged International Testing Agency to increase testing on U.S. athletes.

Knighton was found to have trenbolone in his system this year, but he was not banned from the Paris Games because an arbitrator determined that the likely cause of the test was contaminated meat.

Retired PHOGAT Retired

Vinesh Phogat announced that she has retired from the sport of wrestling after being disqualified in the 50kg women's freestyle final on Wednesday.

Phogat, 29, was to compete with American Sarah Hildebrandt to win the gold but fell short by 100 grams despite spending hours in the Sauna to lose weight.

CARRINGTON GOES IN SEARCH OF SEVENTH MEAL

First medals are on the line in the sprint canoe and Lisa Carrington will be looking to increase her five-gold and three-bronze haul when she competes in women's four 500m kayak.

(source: Reuters)