Al Wasl FC and Al Muharraq SC set the early pace in Group A with impressive wins.
UAE's Al Wasl produced a seven-star display as it silenced Iran's Esteghlal with a 7-1 win and will expect another three points from Jordan's Al Wehdat.
Al Wehdat succumbed 4-0 to Al Muharraq and will be desperate to revive its campaign and so will Esteghlal, and the Iranian side will hope to use home ground advantage to good effect against Al Muharraq.