Only DL flight I was on as MVP G was a SLC-SEA at the tail end of spring break in 2011. Didn't have much hope for it but I was #3 on the gate display and ended up with the upgrade on the CRJ back to Seattle. I had better upgrade % on DL (1/2) than I did on AS (0/9 on AS flights, used my AA# on AA flights and was 100%) as an AS MVPG