Okazaki equals Kagawa's Bundesliga record as Mainz goes down to Dortmund
The Japanese forward struck in the 14th and 53rd minutes at Signal Iduna Park but could do nothing as die Nullfunfer lost 4-2 to BVB.
Okazaki has now scored 13 league goals in 2013/14, which equals Shinji Kagawa's record by a Japanese player in a single German season when he was at Dortmund.
"It's great to score against a top team," Okazaki said. "I want to continue playing like I did today.
"If I can score another goal. I believe I can make my mark in Germany."
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