The phrase "straight red" typically refers to a decision made by a referee in sports such as soccer or rugby, where a player is shown a red card and immediately sent off the field for a serious foul or misconduct. Full definition
This has to stop 3 obvious straight red cards, and a penalty. (untold-arsenal.com)
It's common knowledge that two - footed tackles are strictly straight red situations, so there can be no complaint with the official's decision. (justarsenal.com)
BT sport said Paulista got straight red for that kick. (justarsenal.com)