Win-loss research: find what changed before rewriting the pitch

Win-loss research investigates why a buyer selected a supplier, chose an alternative or made no purchase. Ternpath, an illustrative supplier-booking software company, must decide whether a falling win rate calls for a new pitch or better support during evaluations. Its later export includes a reopened evaluation, duplicate purchase records and a no-purchase outcome that change which comparison the team can make.

All records and buyer accounts below are constructed for the walkthrough; no research program or collected results are being reported.

The reporting cutoff defines the decisions

Ternpath sells a web portal where suppliers request delivery slots and warehouse coordinators approve them. The review concerns new purchases of this product in one region. Renewals and expansions belong in separate groups because they answer different commercial questions.

Choose the reporting cutoff and the rule for assigning a buying decision to a period. Here, compare January 1 to March 31, 2026, using an April 7 cutoff, with April 1 to June 30 using a July 7 cutoff. Include decisions whose latest qualifying close falls within the period and that remain closed at its cutoff. Reopened evaluations remain visible as open work, outside the closed-decision denominator. This is the example's rule, not a universal CRM convention.

Preserve the dated source that supports each disposition. A live CRM screen viewed next month cannot reproduce what was known at this cutoff unless its history has been retained. If close dates or opportunity types are unreliable, resolve that source problem before presenting a change as a buyer finding.

Ternpath's earlier period has six distinct closed decisions: four wins and two verified competitor losses. Its all-closed win rate is 4 ÷ 6 = 66.7%. The later file has these seven CRM records:

Do not remove records merely because they resemble one another. R07 is merged only because the source establishes the same buying event. Two genuine purchases by one account would need their own decisions. R06 is open under the stated cutoff rule, so it is not a closed loss in this comparison.

Closed outcomes and supplier selections have different bases

There are six CRM rows marked closed in the later file, including the linked duplicate. Counting those rows produces 2 ÷ 6 = 33.3%. After the duplicate is reconciled, there are five distinct closed decisions and two wins: 2 ÷ 5 = 40.0%.

The reconciliation changes the reported level, but the all-closed rate still falls from 66.7% to 40.0%. Keep that decline visible. Explaining the denominator does not make the commercial problem disappear.

It does change what the rate can establish. Of the later decisions, two are wins and one is a verified selection of another supplier. That resolved supplier-selection subset has a win share of 2 ÷ 3 = 66.7%. It excludes the no-purchase decision and the unresolved outcome. The file does not establish which alternatives the winning accounts evaluated. This is a different measure, not a corrected headline that proves competitive performance stayed the same.

If D05 later proves to be another supplier selection, the resolved supplier-selection subset becomes 2 ÷ 4 = 50.0%. The example shows why resolving a missing outcome can change the interpretation. These tiny groups illustrate accounting; they cannot establish a reliable performance difference.

The next commission should therefore resolve D05's outcome and investigate why D04 made no purchase, while retaining relevant wins and competitor losses. Commissioning only interviews about losing to a rival would assume the explanation the business still needs to establish.

If D05 is later verified as another competitor selection, compare those accounts with relevant wins to investigate what differentiated the choices. If the missing outcome instead reveals another abandoned purchase, the no-purchase explanation deserves more attention. Keep the original cutoff account visible beside later follow-up. Whatever the unknown outcome turns out to be, use it to choose which buyers to talk to next. Keep the explanation provisional until the evidence supports it.

The missing explanation determines the buyer program

The Gartner category definition for win-loss providers includes understanding wins, losses and no-decisions through post-evaluation buyer research. Ask a proposed partner which of those outcomes its recruiting and reporting will retain for your decision.

For Ternpath, the client CRM owner first confirms the event links and cutoff dispositions. The research lead then identifies who participated in each selected evaluation and what remains unknown. Agree who contacts buyers, how invitations describe the purpose, how interview material may be used and how unsuccessful recruitment will appear in the return.

Keep the outcome frame distinct from the interview sample. A deliberately selected balance of wins and losses can help examine contrasting explanations. It does not reproduce the company's actual win rate. An interview acceptance rate among invited buyers is another separate denominator.

Klue's interview-sourcing guide recommends grouping relevant deals by characteristics such as product line, deal size and region. Apply that principle to the question at hand: a new regional product purchase should not silently be compared with a different product's renewals. Ask why each group is included and what the comparison can support.

Timing also belongs to the decision. Contact buyers when the episode can be reconstructed appropriately, and distinguish a completed choice from a negotiation still in progress. Document the chosen interval instead of assuming one waiting period fits every sales cycle.

Our competitive research companies guide covers the broader choice between competitor intelligence, monitoring, buyer interviews and prospective comparisons. This commission concerns the actual outcome frame and the buyer explanations missing from it.

Each explanation belongs to a specific buying decision

Suppose the selected follow-up accounts develop as follows. They remain part of the fictional example.

For D01, a champion explains why the scheduling workflow was useful. A procurement participant describes difficulty establishing the implementation owner, even though the purchase went ahead. These are two perspectives on one win, not two winning accounts. The difficulty belongs in the findings rather than being discarded because the deal succeeded.

For D03, the seller recorded “weak product presentation.” A buyer participant instead describes choosing a supplier already included in the group's approved purchasing arrangement. The research lead should check the participant's role, the sequence and any suitable supporting material. The account supplies a different explanation; it does not independently verify every private procurement rule or competitor capability.

For D04, the buyer explains that an internal rollout team was reassigned and no supplier was selected. A record of that decision supports the no-purchase disposition. A more persuasive pitch would still require investigation before being proposed as the remedy for unavailable implementation resources.

D05 remains unknown if no suitable buyer account or other source is obtained. A failed invitation is not evidence that a competitor won. D02 remains a verified win without a researched explanation if its buyer was not interviewed. Keep both gaps in the return.

Our B2B market research guide explains how to follow a purchase across linked roles. Here, that linkage lets the team reconcile the explanation with the outcome cohort it started from.

A win with friction challenges the loss explanation

The D01 procurement account is a useful contrary case. Implementation uncertainty exists in a win as well as in the no-purchase account. The research cannot label every mention of implementation as a cause of losing.

Compare what differed: whether an owner was eventually assigned, when that happened and what allowed approval to proceed. This can produce a more useful intervention than a general “improve implementation messaging” theme. Ternpath may need a clear evaluation-stage owner and an accurate handoff plan; it may also need to recognize accounts without the resources to deploy.

Clozd's decision-driver documentation describes tagging interview and survey explanations and showing supporting interview quotations. When assessing an output, inspect that underlying link. Ask whether a theme counts mentions, interviews or independent buying decisions, and whether the same factor appears positively, negatively or without determining the outcome.

For this example, a useful recommendation would retain the all-closed decline, correct the duplicate, resolve the missing outcome where possible and investigate rollout ownership across contrasting decisions. It would defer a wholesale pitch replacement until evidence connects the presentation to the outcome. Sales, product and the implementation team can then agree which support they can actually supply.

The work has changed the first commission. Instead of buying a general study of why competitors win, Ternpath requests a reconciled closed-decision frame and targeted explanation of no-purchase, unknown and contrasting implementation cases. If reconciliation and adequate buyer explanations already exist, do not repeat that work; commission the remaining decision instead.

The next sales response is a separate research question

Once the team has defined a feasible handoff, it can investigate how to explain it. A proposed page or sales aid might show who owns each implementation step, what the customer supplies and what remains with Ternpath. Our B2B message testing guide covers that prospective interpretation question.

Keep it separate from the retrospective finding. A clearer new explanation cannot prove why D03 was lost, and a favorable modeled response does not recover D04's missing rollout capacity. Nor does a later improvement in the dashboard isolate the effect of the revised aid when the account mix or outcome definitions have changed.

Vensia can compare modeled buyer reactions to a proposed implementation plan before the sales team uses it. Existing buyer research can supply context for testing how different audiences read the plan.

Book a demo with the implementation responsibilities, customer commitments and buying roles the sales aid must explain. We can compare modeled interpretations of that complete handoff while the win-loss investigation retains each actual buyer account and CRM disposition.