Tarquin MacManus finished the best of the Australians and was unfortunate not to make the low 44 scores and tie cut mark, missing by a stroke after firing rounds of 74-74 to finish at 6-over-par.
Ryan McCarthy, a winner this season back in Australia at the Tasmanian Open and Tasmanian Amateur, finished three off the pace after rounds of 73-77 to close at 8-over-par and a tie for 62nd, whilst Jason Scrivener was another shot back following rounds of 76-75 and in 72nd place.
The remaining Australian playing this week, Luke Bleumink, fired rounds of 77-76 to finish in a tie for 91st.
Kevin Tway kept up his solid play, posting a 2-under-par 69 to take the 36-hole lead lead at 6-under after positing an opening round of 67.
Tway, a junior at Oklahoma State, held a one-shot advantage over Andrea Pavan, an incoming senior with 2009 NCAA champion Texas A&M, and Illinois sophomore Luke Guthrie, who moved in front of first-round co-leader Zach Barlow.
The format for this year's Western Amateur has the players playing 36 holes of stroke play, with the low 16 advancing to the match play segment of the championship.
Forty-eight players made the 36-hole cut that came in at 5-over 147 or better.
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