diff --git a/README.md b/README.md
index 67e65ea..054fc0f 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Run these commands in your shell:
 ```shell
 git clone https://github.com/Sanae6/SmoOnlineServer
 cd SmoOnlineServer
-# replace run with build to only build the server 
+# replace run with build to only build the server
 dotnet run --project Server/Server.csproj -c Release
 ```
 If you ran `dotnet build` instead of `dotnet run`, you can find the binary at `Server/bin/net6.0/Release/Server.exe`
diff --git a/Server/Program.cs b/Server/Program.cs
index bc698c2..9b124a0 100644
--- a/Server/Program.cs
+++ b/Server/Program.cs
@@ -149,7 +149,8 @@ server.PacketHandler = (c, p) => {
 CommandHandler.RegisterCommand("rejoin", args => {
     bool moreThanOne = false;
     StringBuilder builder = new StringBuilder();
-    foreach (Client user in server.Clients.Where(c => c.Connected && args.Contains(c.Name))) {
+    foreach (Client user in server.Clients.Where(c => c.Connected && args.Any(x => c.Name.StartsWith(x) ||
+                 (Guid.TryParse(x, out Guid result) && result == c.Id)))) {
         if (moreThanOne) builder.Append(", ");
         builder.Append(user.Name);
         user.Dispose();
@@ -162,7 +163,8 @@ CommandHandler.RegisterCommand("rejoin", args => {
 CommandHandler.RegisterCommand("crash", args => {
     bool moreThanOne = false;
     StringBuilder builder = new StringBuilder();
-    foreach (Client user in server.Clients.Where(c => c.Connected && args.Contains(c.Name))) {
+    foreach (Client user in server.Clients.Where(c => c.Connected && args.Any(x => c.Name.StartsWith(x) ||
+                 (Guid.TryParse(x, out Guid result) && result == c.Id)))) {
         if (moreThanOne) builder.Append(", ");
         moreThanOne = true;
         builder.Append(user.Name);
@@ -183,7 +185,8 @@ CommandHandler.RegisterCommand("crash", args => {
 CommandHandler.RegisterCommand("ban", args => {
     bool moreThanOne = false;
     StringBuilder builder = new StringBuilder();
-    foreach (Client user in server.Clients.Where(c => c.Connected && args.Contains(c.Name))) {
+    foreach (Client user in server.Clients.Where(c => c.Connected && args.Any(x => c.Name.StartsWith(x) ||
+                 (Guid.TryParse(x, out Guid result) && result == c.Id)))) {
         if (moreThanOne) builder.Append(", ");
         moreThanOne = true;
         builder.Append(user.Name);
@@ -225,7 +228,8 @@ CommandHandler.RegisterCommand("send", args => {
     }
 
     if (!sbyte.TryParse(args[2], out sbyte scenario)) return $"Invalid scenario number {args[2]} (range: [-128 to 127])";
-    Client[] players = args[3] == "*" ? server.Clients.Where(c => c.Connected).ToArray() : server.Clients.Where(c => c.Connected && args[3..].Contains(c.Name)).ToArray();
+    Client[] players = args[3] == "*" ? server.Clients.Where(c => c.Connected).ToArray() : server.Clients.Where(c => c.Connected && args[3..].Any(x => c.Name.StartsWith(x) ||
+        (Guid.TryParse(x, out Guid result) && result == c.Id))).ToArray();
     Parallel.ForEachAsync(players, async (c, _) => {
         await c.Send(new ChangeStagePacket {
             Stage = stage,