Well, actually that honor likely goes to the 10-hour match between Jbangalanga, Weaslelawd, Spiked and Deunan, but this story from Ermengol of Shadowsong (EU) was too fun not to share:
I was the other day in a 2v2 Arena Druids against Druids when, because of some terrible healing of mine, my mate died. I was all alone saying “we’re done,” “sorry,” etc., when I realized their DPS was so low they couldn’t surpass my heals. They tried everything (one time they waited for full mana and spammed Moonfire, another one the Resto went cat, etc.), but they just couldn’t. I even went Tree of Life a few times to save mana (/dance included). Hilarious!
How did “we” win? Balance went AFK, Resto got disconnected… and the rest is history. Probably longest arena ever.
Was it worth it? Yeah! Not because of the rating (that’s for sure), but the picture!