John Millman has finished short of claiming his first ATP title after losing the final of the Japan Open in straight sets to Novak Djokovic.

The Australian was no match for the world No.1, going down 6-3 6-2.

Still, it was an excellent week for Millman who is expected to get a rankings boost from No.80 to No.58 in the world as well as a pay day of $A289,000.

The 30 year-old enjoyed a remarkable run through to what was just his second ATP final, winning a total of six matches including two in qualifying.