Who covers whom
Same hand, different cover → different call. If they cover you, busting ends your night. If you cover them, busting them helps.
Before any bubble call, glance at covers — not only hole cards.
Same AJo, cover vs covered — two different decisions. Cover is not optional information.
'Who covers whom' (NLH tournaments, G3): Antes and structure force wider opens; survival math changes only when jumps are real.