Serginho proved to be the lone goalscorer of the match with a first-half header for the defending champions. This was the first all-Japanese tie in the Round of 16 since 2011 and the 17th overall between clubs from Japan in the history of the AFC Champions League.

Both sides were coming off inspiring 2-0 home wins in domestic competition at the weekend as the title holders and Hiroshima clashed for the first time in Asia’s flagship club tournament.

Both Urawa, who debuted at the 2007 edition, and Ulsan, who first appeared at the 2006 competition, have a rich history in the Continent's premier club competition, and both know what it takes to lift the AFC Champions League title.

So it may come as some surprise that their Round of 16 meeting will in fact be their first time facing off against each other at this level.

Urawa, winners of the 2007 crown, were unable to defend their 2017 title, after failing to qualify for the 2018 tournament, but have come back strongly in 2019 and are taking part in the knockout stages of the AFC Champions League for the fifth time in their history,

The clash – which pits together the league champions of China and Korea Republic – gives Shanghai the chance to avenge the 5-0 loss they suffered at the hands of eventual champions Jeonbuk on what was their debut campaign three years ago.

Oscar netted a hat-trick as Vitor Pereira’s team recorded their own 5-0 victory over another Korean side, Ulsan Hyundai, on Matchday Six to seal the runners-up spot in Group H and advance to the knockout rounds for the fourth successive season.

Jeonbuk, meanwhile, secured their safe passage to the last 16 with a game to spare after a pair of wins over both Urawa Red Diamonds and Beijing FC ensured they finished on top of Group G.

Shanghai SIPG's maiden appearance in the AFC Champions League three years ago was ended in comprehensive fashion when they came up against eventual winners Jeonbuk in the last eight.

After a goalless draw at Shanghai Stadium, the K-League side turned on the style to defeat their Chinese Super League visitors 5-0 in Jeonju to sail into the semi-finals.

The meeting between the champions of China PR and the champions of Korea Republic is one of the most eye-catching fixtures in the 2019 AFC Champions League's last 16 but especially so when the history between the two sides is taken into account.

In 2016, Shanghai SIPG were making their debut in the Continental competition and had impressed in the Group Stage with their attack-minded football led by the likes China PR star Wu Lei, Elkeson and Dario Conca. A Round of 16 victory over FC Tokyo saw the Chinese club into the quarter-finals at the first time of asking, but there they came up against the experienced Jeonbuk.

A goalless stalemate in Shanghai was an even affair, but the return meeting in Jeonju resulted in a comprehensive 5-0 win for the hosts who would go on to win the tournament. Three years have passed since then, but the two sides are now set to meet for the first time since the quarter-finals.

With five former champions – including the previous four winners – and a pair of same-country clashes, there is plenty to whet the appetite, so the-AFC.com has picked out five things to look out for ahead of the action.

It has been a remarkable rise for a club that only arrived in China’s top flight in 2013 and have since gone on to to acquire talent of the calibre of Hulk and Oscar, the Brazilian duo who helped inspire them to their maiden Chinese Super League title in 2018 after three successive top-three finishes.

Arguably, however, no one has been more important in their surge to prominence than Wu Lei, who was the league’s top scorer last year before he signed for La Liga side Espanyol at the beginning of 2019 where he has since gone on to become the first player from his country to score in Spain’s top flight.