Jones, who lead after an opening round of 66 yesterday, was not the only one to battle difficult conditions on day two with only one player breaking 70 over the Boso Country Club layout.
A bogey at the last was a frustrating way to finish for Jones having established a three shot lead in spite of the conditions but the 43 year old Canberra golfer is well placed to secure his 15th Japan tour title and extend his lead as the leading foreign career earner in the history of the Japan Tour.
Tied for second place are Japanâ€™s Toru Taniguchi, Yusaku Miyazato, Ryutaro Nagan, Yuki Inamori and Koreans Kyung Nam Kang and resurgent Y.E Yang.
Yang won his first title in eight years when successful at the recent Crowns Tournament and appears to be returning to the sort of form that saw him become Asia's first major winner when successful at the 2009 PGA Championship.
Other Australians in the field to make the cut are Matthew Griffin who is in 9th place at 2 under and four behind Jones, Aaron Townsend is 18th and Scott Strange 54th.
JASON DAY WINNING PITCH ACTION
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