Volk-Ortega.
Vitor let go of Jones arm. Dustins attempt on Khabib wasn't as deep as Ortegas.
Rich Franklin had a good armbar escape back in the day but i cant remember who it was against.
Honorable mentions: Bendo's choke escape vs Cerrone in their first fight, Hughes RNC escape vs Trigg 2 and Pearsons badass armbar escape vs Dunham
Edit: Actually, Bendo's escape might top Volks. That shit was in tight.
Got his arm bent too
But did his thing for most of the fight
If you haven't watched Henderson/Cowboy 1, i seriously recommend you go watch it. Now.