Under The Gun

Under the gun is a slang term for the position at the immediate left to the blinds that always has to act first preflop.

Since a player sitting in the under the gun seat needs to act first, he usually has to play a tight range of cards. Playing too loose is one of the biggest mistakes you can make playing from UTG since many players sitting behind you can wake up with a strong hand and 3-bet or call, and you will be forced to play out position postflop.

While you should be playing only the top part of your range, you also need to do that aggressively and raise every time you enter the pot. Limping under the gun is a very weak strategy you should avoid.