Al Sadd ultimately sealed the league title with a seven-point margin over runners-up Al Duhail, while the latter stormed to a 4-1 victory over their rivals to lift the Amir Cup trophy.

Both sides had reached the 2018 AFC Champions League knock-out stages, before being eliminated by eventual finalists Persepolis, who defeated Al Duhail in the quarter-finals and Al Sadd in the semi-finals.

It was Brazilian Leonardo's ninth goal of the campaign and leaves Al Wahda well placed ahead of the return leg on August 12. Abderrazak Hamdallah had given Al Nassr the lead in the 17th minute.

The winners will go on to face either Al Duhail or Al Sadd, both of Qatar, in the quarter-finals.

The eventual winners of the last 16 tie - the return leg will be played on August 12 - will face either Al Ahli Saudi FC or Al Hilal SFC in the quarter-finals.

The defeat was Zobahan's first in the 2019 AFC Champions League, having won three and drawn three matches in the group stage.

A legend moving into the hot seat, a strong Saudi presence and plenty of new arrivals are among the talking points, so join the-AFC.com as we pick out five things to look out for.

Ahead of West Asia's Round of 16 first leg encounters, the-AFC.com looks at eight players who could make the difference for their respective teams.

Youth is the name of the game in West Asia this year as six of the eight AFC Champions League Round of 16 sides are led by head coaches younger than 50. With four new appointments and four continuing from the group stage, we are set to see some mouthwatering tactical battles over the next two weeks.

As a hot summer across West Asia comes to an end, it has also been a heated season in the transfer market. The eight teams from Saudi Arabia, United Arab Emirates, Islamic Republic of Iran and Qatar bolstered their ranks with exciting signings who hope to start with a bang as teams kick-off their season with the 2019 AFC Champions League Round of 16 matches in August.