The battle for supremacy continued in the women’s Water Polo competition as Russia threw down the gauntlet, while the USA and Spain could not be separated.
Russia overcame Italy to announce their intentions for a medal.
After a cagey first half, the World Championships bronze medallists pulled ahead in the third quarter and a late Italian fightback was not enough to bother them.
They now have a 100 per cent record in Group B, after beating Great Britain narrowly in their last game.
Russia scored first to lead at the end of the first quarter 1-0. They doubled their tally in the second period, but Italy pegged one back before half time.
The Russians stepped up a gear to win the penultimate quarter 4-1 to put daylight between them and their opponents.
An Italian late charge saw them win the fourth quarter 2-1, but the match finished 7-4 to Russia.
In Group A, Spain and USA held each other to a 9-9 draw.
Both sides were looking to build on winning starts, but they shared the spoils after a tense encounter at the Water Polo Arena.
Spain dominated the first half, while their opponents fought back in the second. The Spanish powered to a 3-1 lead after the first quarter, and held the two-goal cushion going into the half-time break at 5-3.
The USA flew out of the blocks in the third quarter to claw back the deficit, before a Spain goal restored their lead to 6-5.
They had a fantastic chance to pull away, but captain Jennifer Pareja fired a penalty into the arms of the USA goalkeeper, and the USA capitalised by scoring again at the other end to level the scores at 6-6.
Another USA goal gave them the lead for the first time with a minute on the clock in the third period, and the quarter finished 7-6 to the USA.
Spain edged the fourth quarter by one goal, bringing the score to 9-9 at the final whistle.
Hungary snatched victory from China in a thrilling clash, edging ahead for the first time with less than two minutes to go before clinging on to win 11-10.
China were ahead for most of the Group A encounter, but Hungary were never too far behind, and pounced on their opponents in the closing minutes.
In the final game of the day, Australia recorded a big win, 16-3 against Great Britain.
The Australians led from start to finish, dominating in every area of the game to see out a comfortable victory.