Reminds me of the dota games played against OpenAI Five during their last experiment. Top level human players were able to adopt an ad-hoc adversarial policy of their own by playing in unorthodox ways to begin to reliably defeat the AI team towards the end of the games despite majority 99%+ getting spanked. Article linked below mentions the player who probably had the best policy, 10 win streak against the bots.
https://www.player.one/open-ai-five-99-4-winrate-vs-humans-d...