Noel Callow had a disappointing day at Morphettville on Saturday without a winner and leaving with a suspension.
Callow pleaded guilty to causing interference aboard Magnatti in the Lightning Stakes over 1050m.
Magnatti shifted in near the 900m and crossed Mystified, causing that horse to check and alter course.
Callow was suspended for four South Australian meetings, to commence at midnight on July 30 and expire at midnight on August nine.