diff --git a/src/sandbox/generate-svg.ts b/src/sandbox/generate-svg.ts
index 9740b3d..faf883b 100644
--- a/src/sandbox/generate-svg.ts
+++ b/src/sandbox/generate-svg.ts
@@ -266,12 +266,13 @@ ${sponsorImages.length > 0 ? (() => {
     const total = r.iterations.length;
     const rank = i + 1;
     const medianMs = r.summary.ttiMs.median;
+    const allFailed = ok === 0;
     const score = r.compositeScore !== undefined ? r.compositeScore.toFixed(1) : '--';
 
     // Color code based on speed
-    let speedClass = 'fast';
-    if (medianMs > 2000) speedClass = 'slow';
-    else if (medianMs > 1000) speedClass = 'medium';
+    let speedClass = allFailed ? 'slow' : 'fast';
+    if (!allFailed && medianMs > 2000) speedClass = 'slow';
+    else if (!allFailed && medianMs > 1000) speedClass = 'medium';
 
     // Rank styling
     let rankClass = 'rank';
@@ -279,14 +280,18 @@ ${sponsorImages.length > 0 ? (() => {
     else if (rank === 2) rankClass = 'rank rank-2';
     else if (rank === 3) rankClass = 'rank rank-3';
 
+    const medianDisplay = allFailed ? '--' : formatSeconds(medianMs);
+    const p95Display = allFailed ? '--' : formatSeconds(r.summary.ttiMs.p95);
+    const p99Display = allFailed ? '--' : formatSeconds(r.summary.ttiMs.p99);
+
     svg += `
   <!-- Row ${rank} -->
   <text class="${rankClass}" x="${cols.rank}" y="${y}">${rank}</text>
   <text class="row provider" x="${cols.provider}" y="${y}">${formatProviderName(r.provider)}</text>
   <text class="row median" x="${cols.score}" y="${y}">${score}</text>
-  <text class="row median ${speedClass}" x="${cols.median}" y="${y}">${formatSeconds(medianMs)}</text>
-  <text class="row" x="${cols.p95}" y="${y}">${formatSeconds(r.summary.ttiMs.p95)}</text>
-  <text class="row" x="${cols.p99}" y="${y}">${formatSeconds(r.summary.ttiMs.p99)}</text>
+  <text class="row median ${speedClass}" x="${cols.median}" y="${y}">${medianDisplay}</text>
+  <text class="row" x="${cols.p95}" y="${y}">${p95Display}</text>
+  <text class="row" x="${cols.p99}" y="${y}">${p99Display}</text>
   <text class="row status" x="${cols.status}" y="${y}">${ok}/${total}</text>
 `;
 
diff --git a/src/sandbox/table.ts b/src/sandbox/table.ts
index ecf72ae..83dab02 100644
--- a/src/sandbox/table.ts
+++ b/src/sandbox/table.ts
@@ -62,12 +62,13 @@ export function printResultsTable(results: BenchmarkResult[]): void {
       ? result.compositeScore.toFixed(1)
       : '--';
 
+    const allFailed = successful === 0;
     console.log([
       pad(result.provider, nameWidth),
       pad(score, 8),
-      pad(formatSeconds(result.summary.ttiMs.median), colWidth),
-      pad(formatSeconds(result.summary.ttiMs.p95), colWidth),
-      pad(formatSeconds(result.summary.ttiMs.p99), colWidth),
+      pad(allFailed ? '--' : formatSeconds(result.summary.ttiMs.median), colWidth),
+      pad(allFailed ? '--' : formatSeconds(result.summary.ttiMs.p95), colWidth),
+      pad(allFailed ? '--' : formatSeconds(result.summary.ttiMs.p99), colWidth),
       pad(`${successful}/${total} OK`, 10),
     ].join(' | '));
   }
diff --git a/src/storage/generate-svg.ts b/src/storage/generate-svg.ts
index 46423b3..e462066 100644
--- a/src/storage/generate-svg.ts
+++ b/src/storage/generate-svg.ts
@@ -184,12 +184,13 @@ ${sponsorImages.length > 0 ? (() => {
     const total = r.iterations.length;
     const rank = i + 1;
     const downloadMs = r.summary.downloadMs.median;
+    const allFailed = ok === 0;
     const score = r.compositeScore !== undefined ? r.compositeScore.toFixed(1) : '--';
 
     // Color code based on download speed
-    let speedClass = 'fast';
-    if (downloadMs > 5000) speedClass = 'slow';
-    else if (downloadMs > 2000) speedClass = 'medium';
+    let speedClass = allFailed ? 'slow' : 'fast';
+    if (!allFailed && downloadMs > 5000) speedClass = 'slow';
+    else if (!allFailed && downloadMs > 2000) speedClass = 'medium';
 
     // Rank styling
     let rankClass = 'rank';
@@ -197,14 +198,18 @@ ${sponsorImages.length > 0 ? (() => {
     else if (rank === 2) rankClass = 'rank rank-2';
     else if (rank === 3) rankClass = 'rank rank-3';
 
+    const downloadDisplay = allFailed ? '--' : formatSeconds(downloadMs);
+    const throughputDisplay = allFailed ? '--' : formatMbps(r.summary.throughputMbps.median);
+    const uploadDisplay = allFailed ? '--' : formatSeconds(r.summary.uploadMs.median);
+
     svg += `
   <!-- Row ${rank} -->
   <text class="${rankClass}" x="${cols.rank}" y="${y}">${rank}</text>
   <text class="row provider" x="${cols.provider}" y="${y}">${formatProviderName(r.provider)}</text>
   <text class="row download" x="${cols.score}" y="${y}">${score}</text>
-  <text class="row download ${speedClass}" x="${cols.download}" y="${y}">${formatSeconds(downloadMs)}</text>
-  <text class="row" x="${cols.throughput}" y="${y}">${formatMbps(r.summary.throughputMbps.median)}</text>
-  <text class="row" x="${cols.upload}" y="${y}">${formatSeconds(r.summary.uploadMs.median)}</text>
+  <text class="row download ${speedClass}" x="${cols.download}" y="${y}">${downloadDisplay}</text>
+  <text class="row" x="${cols.throughput}" y="${y}">${throughputDisplay}</text>
+  <text class="row" x="${cols.upload}" y="${y}">${uploadDisplay}</text>
   <text class="row status" x="${cols.status}" y="${y}">${ok}/${total}</text>
 `;
 
diff --git a/src/update-readme.ts b/src/update-readme.ts
index 8c904d5..33149a1 100644
--- a/src/update-readme.ts
+++ b/src/update-readme.ts
@@ -69,9 +69,13 @@ function buildTable(results: BenchmarkResult[]): string {
     } else {
       const ok = r.iterations.filter(i => !i.error).length;
       const total = r.iterations.length;
+      const allFailed = ok === 0;
       const score = r.compositeScore !== undefined ? r.compositeScore.toFixed(1) : '--';
+      const median = allFailed ? '--' : formatSeconds(r.summary.ttiMs.median);
+      const p95 = allFailed ? '--' : formatSeconds(r.summary.ttiMs.p95);
+      const p99 = allFailed ? '--' : formatSeconds(r.summary.ttiMs.p99);
       lines.push(
-        `<tr><td>${capitalize(r.provider)}</td><td align="center"><b>${score}</b></td><td align="center">${formatSeconds(r.summary.ttiMs.median)}</td><td align="center">${formatSeconds(r.summary.ttiMs.p95)}</td><td align="center">${formatSeconds(r.summary.ttiMs.p99)}</td><td align="center">${ok}/${total}</td></tr>`
+        `<tr><td>${capitalize(r.provider)}</td><td align="center"><b>${score}</b></td><td align="center">${median}</td><td align="center">${p95}</td><td align="center">${p99}</td><td align="center">${ok}/${total}</td></tr>`
       );
     }
   }