So a friend and I were having a conversation about the efficacy of different submissions at the highest levels. He pointed out that there were very, very few examples of top level guys getting tapped out by toeholds in competition: they tap to kneebars, they tap to heel hooks, but they just don't tap to toeholds. Off the top of my head I couldn't think of any counter-examples. Am I missing something here? Are there examples of top tier guys (guys who've medalled at the Pan Ams, ADCC, or the Mundials) tapping out to toeholds??