flying the flag for Japan

Seeking The Dia, trained by Hideyuki Mori, has finished runner-up to Kane Hekili on his last two occasions, in the Japan Cup Dirt (Gr.1) and the February Stakes (Gr.1), will also be flying the flag for Japan at Nad Al Sheba Racecourse on 25th March, in the Dubai World Cup (Gr.1).

これを読んで、初めてシーキングザダイヤも遠征するんだと言うことを知りました。。。。has finished runner-up to KaneHekili = カネヒキリの２着でゴールとか、flying the flag for Japan=日の丸を掲げるというのが今日のお勉強。しっかし、いくらやってもTOEICには結びつきそうにない勉強方法だな・・・