Borussia Dortmund's Shinji Kagawa scored a brace as Japan dismissed Syria to conclude their AFC second qualifying round undefeated at the top of Group E.

Overview: Bundesliga stars on international duty

Hertha Berlin's Genki Haraguchi came off the bench to complete the scoring in injury-time. Eintracht Frankfurt's Makoto Hasebe captained the side on his 98th cap, with Hamburger SV's Gotoku Sakai and Hannover 96's Hotaru Yamaguchi also starting for Vahid Halilhodzic's men.

Yamaguchi's club teammate Hiroshi Kiyotake was a late substitute, whilst Die Roten's third representative, Hiroki Sakai, remained on the bench.