diff --git a/src/components/PlayerCareerPitchingTable.vue b/src/components/PlayerCareerPitchingTable.vue
index fd71bab..4e6c135 100644
--- a/src/components/PlayerCareerPitchingTable.vue
+++ b/src/components/PlayerCareerPitchingTable.vue
@@ -28,6 +28,7 @@
               <th>WP</th>
               <th>IR</th>
               <th>IRS</th>
+              <th>IRS%</th>
               <th>WHIP</th>
               <th>H/9</th>
               <th>HR/9</th>
@@ -37,7 +38,7 @@
             </tr>
           </thead>
           <tbody id="career-pitching-table">
-            <tr v-for="stat in sortedRegularAndPostSeasonPitching">
+            <tr v-for="stat in sortedRegularAndPostSeasonPitching" :key="stat.seasonNumber">
               <td>S{{ stat.seasonNumber }}{{ stat.isRegularSeason ? '' : ' / Playoffs' }}</td>
               <td>{{ stat.win }}</td>
               <td>{{ stat.loss }}</td>
@@ -60,6 +61,7 @@
               <td>{{ stat.wp }}</td>
               <td>{{ stat.ir }}</td>
               <td>{{ stat.ir_sc }}</td>
+              <td>{{ formatIRSPercentage(stat) }}</td>
               <td>{{ stat.whip.toFixed(2) }}</td>
               <td>{{ hitsPer9(stat) }}</td>
               <td>{{ hrsPer9(stat) }}</td>
@@ -69,7 +71,7 @@
             </tr>
           </tbody>
           <tfoot>
-            <tr v-for="(stat, idx) in careerPitchingStats">
+            <tr v-for="(stat, idx) in careerPitchingStats" :key="idx">
               <th>Career{{ idx > 0 ? ' / Playoffs' : '' }}</th>
               <th>{{ stat.win }}</th>
               <th>{{ stat.loss }}</th>
@@ -92,6 +94,7 @@
               <th>{{ stat.wp }}</th>
               <th>{{ stat.ir }}</th>
               <th>{{ stat.ir_sc }}</th>
+              <th>{{ formatIRSPercentage(stat) }}</th>
               <th>{{ stat.whip.toFixed(2) }}</th>
               <th>{{ hitsPer9(stat) }}</th>
               <th>{{ hrsPer9(stat) }}</th>
@@ -116,7 +119,7 @@ interface PitchingStatWithSeason extends PitchingStat {
 }
 
 export default {
-  name: "PlayerCareerPitchingTable",
+  name: 'PlayerCareerPitchingTable',
   props: {
     regularSeasonPitchingStats: { type: Array<PitchingStat>, required: true },
     postSeasonPitchingStats: { type: Array<PitchingStat>, required: true },
@@ -191,6 +194,11 @@ export default {
     },
     hrsPer9(stat: PitchingStat): string {
       return hrsPer9(stat)
+    },
+    formatIRSPercentage(stat: PitchingStat): string {
+      if (stat.ir === 0) return '-'
+
+      return `${(stat.ir_sc_pct * 100).toFixed(1)}%`
     }
   }
 }