Saudi Arabia have rebounded strongly from a disastrous Brazil 2014 campaign, qualifying for the AFC Asian Cup in style under new coach Juan Lopez Caro.
Guangzhou Evergrande and Esteghlal will carry one- and two-goal cushions to Doha and Buriram in their quest to reach the semi-finals, while the Al Shabab-Kashiwa Reysol and FC Seoul-Al Ahli ties remain evenly poised.
The AFC Champions League resumes on Wednesday following a lengthy break with three evenly poised match-ups, while Thai outsiders Buriram United will look to slay another giant in the form of Iranian champs Esteghlal.
Saudi Arabia's Al Shabab will rely heavily on the scoring prowess of striker Naif Hazazi - one of the nation's most popular footballers of all-time - as they aim to end the kingdom's eight-year AFC Champions League drought.
The journey towards AFC Asian Cup qualification began with continental giants Iran, Iraq and Saudi Arabia opening in bright fashion while ten-man Hong Kong managed to collect a point on the road against 2011 semi-finalists Uzbekistan.
The long road to qualification for the 2015 AFC Asian Cup in Australia commences on Wednesday with a massive matchday featuring ten matches and four former continental kings. FIFA.com previews all the action.