Hashimoto first appeared in the PDC circuit competing in the 2009 Las Vegas Desert Classic qualifiers, as well as a Players Championship. He attempted to qualify for the 2010 PDC World Darts Championship, but lost in the final of the Japanese Qualifying event to Haruki Muramatsu. In September 2010, Hashimoto won through the qualifier, beating Mitsumasa Hoshino in the final and qualified for the 2011 PDC World Darts Championship. A month later, he was a quarter-finalist in the Japan Open and in November, he reached the final of the WDF Asia-Pacific Cup men's singles, losing to New Zealand's Koha Kokiri.