How to run a win/loss review that actually changes something

Out+Come6 min readUpdated 2026-11-05

Most loss reviews do not change anything. They confirm what the team already believed: we lost on price, the buyer was not ready, the competitor discounted. The review ends, and the next quarter looks the same.

Why they fail

  • The salesperson explains the loss, so the reason is their view.
  • Nobody asks the buyer.
  • The conclusions are too vague to act on.
  • Nobody owns the follow-up.

Put two reasons side by side

Record what the salesperson believes was the reason, then record what the buyer says. When they differ, you have found something worth learning. It is common for the reasons to disagree, and the gap is where the insight is.

Make the buyer call

  • Have someone other than the salesperson make the call.
  • Ask permission, keep it to twenty minutes, and promise no selling.
  • Ask what problem they were trying to solve, who was involved, what ultimately decided it, and what you could have done differently.
  • Thank them, and send a short note with no pitch.

Look for patterns, not stories

One lost deal is a story. Ten lost deals logged the same way are a pattern. Look at reasons, stages, segments and competitors. Which reason recurs? At which stage do deals leave?

Choose one change

End every review with one change, one owner and one date. Check at the next review whether it was made and whether it helped.

The reason salespeople give for a loss and the reason buyers give are often different.

The Lost Deal Autopsy gives you a log, a pattern summary and a buyer interview guide to run this process.

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