Do basic techniques and solid fundamentals work even at the highest level? Yes, they do!
Watch this video to witness the most basic mount escape (the bridge/upa) being used successfully against the 2019 IBJJF World Champion Kaynan Duarte.
There is so much good stuff in this little clip that I wanted to cover not only the mount escape but also top mount maintenance.
For more info on how to escape bad positions, check out The Ace Of Escapes Online Course.