Defending champion Charl Schwartzel suffered on day three of the Masters as he carded a round of 75 to put him on a disappointing six-over-par.
After ending Friday on three-over, the South African hit two bogeys on the front nine to see him slip down to five-over.
A further two bogeys left him on a worrying seven-over, but the 27-year-old limited the damage with birdies on 13 and 17.
However, a final bogey on the 18th left the 2011 winner on six-over.
Hunter Mahan and Padraig Harrington currently share the clubhouse lead on four-under.
