The referee had no other choice but to award the penalty and send off the Goalkeeper from Tianjin Teda because it was a clear goalscoring opportunity. A little bit of a dissent from the captain but lets be honest: It was the correct decision.
Everything was set for this game: Gamba Osaka were playing in front of their own fans and needed a win to finish top so they can host the Round of 16 match and they did under the most severe conditions under heavy rain.