What are some absolute facepalm moments you've experienced (either yourself or your opponent) while playing Battlegrounds?
This last season was the first time I actually gave it a go, never reaching further than Gold III in the past, and made it to the Gladiator's Circuit - though never managing to get out of Uru III once I made it there!

A couple of my own facepalm moments:
- at least twice I've forgotten about the placement order, seen them place a defender and excitedly thought "I know exactly who I can use against them!" - then promptly place that attacking counter...as my own defender! D'oh!
- I've done a few very silly matchups along the way, forgetting some immunities or otherwise bad matchups - like sending Shang Chi against Ebony Maw, Sunspot against Kindred, not to mention forgetting to apply Human Torch's Pre-fight.
- I've also giggled at my opponent placing Nimrod against my Onslaught or Bishop, to their own detriment.
What are some of yours? I've really grown to appreciate what a great part of the game Battlegrounds is!