Newcomers Guangzhou R&F stunned Japanese treble-winners Gamba Osaka 2-0 on their AFC Champions League debut as the Asian club showpiece got under way on Tuesday.

The Chinese side looked on in envy as city rivals and domestic champions Evergrande won the title in 2013, but they announced themselves in style with the win in Osaka.

Moroccan striker Abderrazaq Hamedallah set the visitors on their way with a mazy run and finish on 11 minutes, which left a back-pedalling Gamba defence red-faced.

And Wang Song ensured a dream opener for R&F, and their new coach Cosmin Contra, in Group F when his deflected free-kick found the net 11 minutes from time.

Yang Xu's second-half double later spared Shandong Luneng's blushes and made it a 100 percent start for Chinese clubs as they beat Binh Duong 3-2 in provincial Thu Dau Mot.

Binh Duong's Nigerian forward Ganiyu Oseni cancelled out Wang Yongpo's opener, before Wang Qiang gave the hosts a shock lead with an own goal on 56 minutes.

But Yang got Shandong back to 2-2 just three minutes later before he completed the great escape in Group E by snatching the winner with 10 minutes to go.

Jeonbuk Hyundai Motors' Group E campaign began with a whimper as the South Korean champions were held 0-0 at home by Japan's Kashiwa Reysol.

But Thailand's Buriram United started with a win when they beat South Korean side Seongnam FC 2-1 at the Thunder Castle stadium in Group F.