CO Open 100bb – MTT range
Default preflop range for the CO Open 100bb spot in 6-Max MTT, from the RangerPro library.
In the CO Open spot at 100bb effective stacks, this default range includes 81 of the 169 starting hands (47.9%). The dominant action is Raise with 81 hands. Every hand in this range is played at full frequency, with no mixed strategies.
The Cutoff is the first truly advantageous position. With only the Button, SB, and BB behind, steals become profitable and suited connectors start joining the range.
Opening (raise first in) sets the pace for the hand. Your open-raise range defines which hands are strong enough to voluntarily enter the pot and face potential 3-bets.
At 100bb effective stacks, post-flop playability is the key factor. Speculative hands like suited connectors and small pairs retain their implied odds value, and 3-bet pots don't commit your entire stack.
Action distribution
Hand composition
Key hands by action
pie_chart Composition breakdown
This range contains 13 pocket pairs, 51 suited hands, and 17 offsuit hands. Suited combos represent 63% of the range, reflecting a strong preference for suited holdings. The weakest pocket pair included is 22. All pairs from 22 through AA are part of the strategy.
compare_arrows Stack Depth Comparison
Compared to 50bb, this range is wider by 1 hands (80 → 81 hands), reflecting the extra playability that deeper stacks provide.
help Frequently Asked Questions
Why is the Cutoff range significantly wider than HJ? expand_more
The CO only has the Button, SB, and BB behind — three players to get through. This dramatically increases steal equity and justifies opening weaker suited hands and more offsuit broadways at 100bb.
Should I adjust my CO range based on the Button player? expand_more
Absolutely. If the Button is an aggressive 3-bettor, tighten your CO range to hands that play well against 3-bets. If the Button is passive, widen aggressively to steal the blinds.
What is the optimal raise size from the Cutoff? expand_more
In MTTs, 2–2.5x from the CO is standard at deeper stacks. At 25bb or less, a min-raise (2x) is most common, preserving stack flexibility while still applying blind pressure.
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school Strategy guide
Go deeper on this spot with our position and stack-depth strategy guides.
layers Other stack depths
These ranges are theoretical approximations provided for study purposes only. They do not guarantee results. Adapt them to your own game and opponents.
Study this range interactively
Sign in to RangerPro to explore this range with drag-paint, frequency sliders, and the tight/loose modifier.