It had to happen eventually, I guess. After 100% first class upgrade success all year long due to my Delta Diamond status, I finally had to sit in the back this week on a PHL to DTW flight. Maybe it was the end of a major convention in Philly that caused it but hard to complain after the run I've had this year. Even when I have made last minute changes or used same-day confirm benefits to take an earlier flight, I've always cleared. On most flights, I've actually cleared several days in advance and haven't even had to concern myself with the upgrade list. This is despite the fact that I buy the lowest fare class tickets I can. I do have the Delta Reserve American Express Card that gives me a little advantage on the upgrade list when compared to flyers of equal status and on the same fare class. Of course, there have also been some RJ flights this year that did not have a first class section and Delta does not upgrade on international flights (although I did get bumped twice on international flights earlier this year due to oversold situations in coach). And, on those other international flights, I've been in "Economy Comfort" for no charge. When I look at blog and message postings from other airline programs' elite members, I feel pretty good about my success rate. Everyone loves to criticize Delta, but they have treated me great this year and I look forward to sitting in first class, hopefully, and starting a new streak when I fly next week.