And there was the quite the upset in that 1929 US Amateur at Pebble. Just think, if Jones wins that one and then does the following year at Merion, he has a record four straight that would still stand today (and likely would forever). This from Pebble's web page:
Bobby Jones comes into this tournament as the defending champion and the greatest amateur of the day. A 1929 victory will mean three Amateur championships in a row – a record Jones is widely expected to set. Johnny Goodman, a young amateur from Omaha, Nebraska, does not share this expectation, however, and quickly finds himself two up on Jones in the middle of the first round of match play. The two battle throughout the day, with Goodman the unlikely one-up leader when they come to 18. The pair halve the hole, then the mighty Robert Tyre Jones finds himself knocked out of contention in the first round.