diff --git a/README.md b/README.md
index e34490c..0b806a4 100644
--- a/README.md
+++ b/README.md
@@ -29,3 +29,4 @@
 | Reset   |  R  |
 | Clear   |  T  |
 | Squeeze |  Y  |
+| Drop    |  D  |
diff --git a/public/timer.css b/public/timer.css
index 4f87d08..9d0097a 100644
--- a/public/timer.css
+++ b/public/timer.css
@@ -54,6 +54,10 @@ html {
     color: #ddd;
 }
 
+.btn_drop {
+    color: #93e;
+}
+
 .limiter {
     font-size: 6vw;
     position: fixed;
diff --git a/public/timer.js b/public/timer.js
index d430013..754308e 100644
--- a/public/timer.js
+++ b/public/timer.js
@@ -191,6 +191,20 @@ class Timer {
         this.start();
     }
 
+    drop() {
+        console.log(`running drop`);
+        if (this.records.length == 0) {
+            return;
+        }
+        console.log(`drop ${this.results.lastChild.innerText}`);
+        this.results.removeChild(this.results.lastChild);
+        // update bestlap
+        this.records.splice(this.records.length - 1, 1);
+        this.sorted = this.records.slice();
+        this.sorted.sort(compare);
+        this.bestlap.innerText = this.format(this.sorted[0]);
+    }
+
     format(times) {
         return `${lpad(times[0], 2)}:${lpad(times[1], 2)}.${lpad(Math.floor(times[2]), 3)}`;
     }
@@ -265,6 +279,9 @@ function exec(name) {
         case 'squeeze':
             timer.squeeze();
             break;
+        case 'drop':
+            timer.drop();
+            break;
     }
 }
 
@@ -275,6 +292,7 @@ let key_map = {
     '82': 'reset', // r
     '84': 'clear', // t
     '89': 'squeeze', // y
+    '68': 'drop', // d
 };
 
 document.addEventListener('keydown', function (event) {
@@ -294,3 +312,4 @@ document.getElementById('btn_pause').addEventListener('click', btn_listener);
 document.getElementById('btn_passed').addEventListener('click', btn_listener);
 document.getElementById('btn_reset').addEventListener('click', btn_listener);
 document.getElementById('btn_clear').addEventListener('click', btn_listener);
+document.getElementById('btn_drop').addEventListener('click', btn_listener);
diff --git a/src/http/get-timer/index.js b/src/http/get-timer/index.js
index fc867ea..6264995 100644
--- a/src/http/get-timer/index.js
+++ b/src/http/get-timer/index.js
@@ -28,6 +28,7 @@ exports.handler = async function http(req) {
     <a href="#" id="btn_passed" class="button btn_passed">Passed</a>
     <a href="#" id="btn_reset" class="button btn_reset">Reset</a>
     <a href="#" id="btn_clear" class="button btn_clear">Clear</a>
+    <a href="#" id="btn_drop" class="button btn_drop">Drop</a>
   </nav>
   <div class="limiter"></div>
   <div class="display"></div>
diff --git a/views/timer.ejs b/views/timer.ejs
index a1b4939..1fc10a4 100644
--- a/views/timer.ejs
+++ b/views/timer.ejs
@@ -14,6 +14,7 @@
         <a href="#" id="btn_passed" class="button btn_passed">Passed</a>
         <a href="#" id="btn_reset" class="button btn_reset">Reset</a>
         <a href="#" id="btn_clear" class="button btn_clear">Clear</a>
+        <a href="#" id="btn_drop" class="button btn_drop">Drop</a>
     </nav>
     <div class="limiter"></div>
     <div class="display"></div>