Among the sides taking to the field over the next two days are two former champions and four debutants, while three countries will be represented in the competition for the very first time.

Ahead of a mouthwatering 10 fixtures on April 14 and 15, the-AFC.com has selected five things to look out for.

Following the success of the 2020 competition held in Qatar, this year’s group stage takes place in a centralised format but across four cities in three different countries as the AFC continues to find solutions for the beautiful game in the continent to navigate the challenges of the pandemic.

Saudi Arabia, the United Arab Emirates and - for the first time - India are hosting the 2021 AFC Champions League group stage games. the-AFC.com profiles the host grounds.

At the age of 36, Shojaei is just six years his manager’s junior. Both men were part of the Islamic Republic of Iran squad that competed in the 2006 FIFA World Cup. That summer after their return from Germany, young midfielder Shojaei (20) and forward Khatibi (26) were recruited by UAE side Sharjah FC.

While Khatibi lasted just half a season at Sharjah, scoring four goals before moving to fellow UAE side Emirates Club, Shojaei stayed put, establishing himself as a fan favourite at Sharjah Stadium and becoming one of the league’s finest midfielders over two seasons before earning a big money move to Spanish La Liga side Osasuna where he would go on to make over 100 appearances.

With no shortage of attacking talent on display, we shine the spotlight on six frontmen who are on fire in their clubs’ domestic campaigns and could be set to bring those hot streaks onto the Asian stage in this year's continental club competition.

Some of these starlets are established players for their club sides and some have even appeared in previous AFC Champions League seasons, while several are just breaking into the starting XI, but those U23 players are all eyeing a milestone campaign over the next three weeks.

With the 20 remaining teams from East Asia set to begin their continental campaigns a little later in the year, the-AFC.com looks at some of the numbers that stand out ahead of the start of the 19th edition of the AFC Champions League.

In a thrilling, see-sawing second leg, China watched their 2-1 first leg lead evaporate thanks to two Korean goals just before half-time but managed to reach extra-time when Yang Man touched a Wang Shuang free-kick into the net with 20 minutes remaining, before Player of the Match Wang finally broke the deadlock with a 103rd minute strike to make it 4-3 on aggregate.

It was an epic encounter between two desperate teams, with suspended Chinese captain Wu Haiyan's tears of joy indicative of her side's relief as they celebrated in front of 13,500 fans.