Haller trails Korean, Lee Tae-hee, a Japan Tour player currently ranked 680 in the world, although he has made a lot of cuts over the past twelve months without contending.
Haller, who was out early on day two, is a regular performer in OneAsia Tour events, even while playing a season on the Japan Tour last year, but has had little success, recording just three top tens in more than five seasons there.
The best of those came at the Korean Open in 2010 when 7th but he has also been 9th at both the 2012 Australian Open and the 2013 Nanshan Masters where he produced the best round of the day on Sunday.
Last week's runner-up at the Maekyung Open, Park Sang hyun, is alone in 3rd position.
Sydney's Jamie Arnold is well placed in a share of 4th position and four from the lead.
David Bransdon 8th, Nick Cullen 14th and Ryan Fox, Steve Jones, Michael Sim and Michael Wright, 20th, are the next best of the Australasians.
Pre tournament favourite K.J. Choi is in a share of 14th position and six shots from the lead.