That was 10 shots worse than his first round and left the former Walker Cup star on two over par, six off the lead.
World No.2 Rory McIlroy endured a disappointing day, finishing the day on two-over par following his round of 74.
Englishman Brian Davis slipped out of contention after carding a two-over par 73 to finish the day in ninth, eight shots behind the leading trio.
World number one Luke Donald of England failed to capitalize as he struggled to a two-over par 74, one better than compatriot Lee Westwood who finished with a disappointing 75.
Defending champion Bubba Watson posted a two-under par round of 70 -- his best round of the week -- to leave him in a tie for 28th on two-over par.
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Cink praised the crowd at St Andrews after bowing out with a two-over 74 to finish one over par.
With a series of gutsy chips and clutch putts on Augusta National's pool-table slick greens, Guan notched four birdies and carded a 1-over-par 73, two shots better than Bubba Watson, the defending champion.
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The 27-year-old is perfectly poised, three shots behind the leader, despite a disappointing one-over-par 72 on day two.
It left him on the same mark as early starter Tiger Woods, who recovered from two over at the turn, to recover to level par.
Blixt has played 10 holes over two days in these conditions in 1-under par.
Brendan McGovern finished fourth on level par while Peter Lawrie was next best on two over.
The two-time LPGA Tour winner closed out with a seven-over par 79.
With Wal-Mart, however, consistently achieving Buzz scores 20 to 30 points lower with Democrats than Republicans over the past year, this divergence between the two parties seems more par for the course than any sort of aberration.
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McDowell, who also led after round two, shot a final-round three-over 74 to finish on level par as Havret, bidding to become the first French major winner since Arnaud Massey won the Open in 1907, carded 72.
Leading Australians Robert Allenby (73) and Geoff Ogilvy (72) were both over par, while Colombia's Camilo Villegas shot a level par 71 and Spain's Sergio Garcia struggled to a two-over 73.
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Masters champion Mike Weir lies second on level par, with Open champion Ben Curtis one over and USPGA winner Shaun Micheel two strokes back.
Ignoring advice from doctors to rest, Beljan played on over the weekend and carded a three-under-par round of 69 on Sunday, which secured him a two-shot victory over compatriot Matt Every.
The 42-year-old American opened with a disappointing one-over 73 but has charged through the field by playing the next two rounds in 15-under-par.
Clarke and Bjorn both picked up two shots early on but their challenge faded with some wayward play and they had to settle for one over par 72s and a share of fifth place.
But he was rocky Saturday, and Sunday was a disaster, as Woods bogeyed the first two holes, double-bogeyed on the third, and yanked himself from the conversation, wrapping at seven over par.
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