Breaker block and mitigation block: order block variants

Once you've understood order blocks, the next step in online courses is almost always a list of variants: breaker, mitigation block, rejection block, propulsion block, vacuum block... Lots of names for overlapping ideas. This lesson presents the two most common and, above all, gives you a method to decide whether they deserve a place in your plan.

The breaker block

A breaker block is an order block that fails: price crosses it decisively (closing beyond the opposite extreme) and, once broken, the zone changes role. If price returns to test it from the other side, it behaves the opposite way: a broken bullish OB becomes a resistance area (bearish breaker); a broken bearish OB becomes support (bullish breaker).

It's this language's equivalent of the classic role reversal principle: broken support that turns into resistance. Nothing new conceptually, but with a more precise marking rule.

The typical sequence of a breaker

1. An uptrend forms a bullish OB (the last bearish candle before an impulse).
2. Price makes a new high, then falls and sweeps a low (liquidity grab).
3. Price breaks the OB on a close and forms a bearish MSS.
4. Price rises and retests the broken OB zone from below: that's the breaker, a candidate to act as resistance.
5. Short entry with LTF confirmation, stop above the breaker.

The mitigation block

The mitigation block has a subtler and less standardised definition: it comes from a move that fails to create a new extreme (for example, after a decline price rises but doesn't exceed the previous high, making a lower high) and then breaks structure. The last candle of the failed attempt is the mitigation block: the zone where losing positions concentrate, which price might return to "mitigate" (close at breakeven).

The distinction from the breaker is often subjective: both are return zones after a change of structure. Many traders don't distinguish them in practice.

A method to decide whether a concept deserves a place in your plan

Instead of adding every concept you meet, use a parsimony rule:

1. Define it in writing so that two people mark it identically.
2. Test it on at least 100 cases (replay or code).
3. Compare it with the simplest version you already use (for example the OB or the support/resistance level): does the new concept give a better expectancy, after costs?
4. Keep it only if the improvement is consistent across different periods and pairs.

In practice, for many traders the answer is that structure + liquidity + OB + FVG are enough to build a complete system, and variants add complexity with no measurable benefit.

How to (possibly) integrate breaker and mitigation into your plan

If you decide to test them:

• Define the breaker as "OB (with quality criteria) broken on a close + MSS + prior sweep" and the entry zone as "the body of the broken OB".
• Measure how often price returns to the zone and how often it reacts.
• Compare with the simpler rule "retest of the broken level" (role reversal) without all the terminology.

If the breaker doesn't beat the simple retest, you have a clear answer and can drop it.

Common mistakes

• Distinguishing breaker and mitigation by name but not by rules.
• Applying them without sweep and MSS: without a change of structure there is no "breaker".
• Ignoring the high timeframe: an M5 breaker against a strong H4 trend is fragile.
• Multiplying concepts in the hope of finding the "right" one.

In short

• The breaker is a failed OB that, retested from the other side, can act as support/resistance: it's role reversal with a marking rule.
• The mitigation block comes from a failed attempt at a new extreme; the distinction from the breaker is often subjective.
• Use parsimony: add a concept only if, tested on 100+ cases, it beats the simpler version.
• Structure, liquidity, OB and FVG are enough for a complete system.
• Complexity increases the risk of overfitting.

Practical exercise

1. Define breaker and mitigation block in writing.
2. Find 30 historical cases and record how often price returns to the zone and reacts.
3. Compare them with a simple retest of the broken level: are there differences in expectancy?