Using getPlayerExact is faster.

src/main/java/com/gmail/nossr50/commands/party/PartyInfoCommand.java

@@ -1,7 +1,6 @@
 package com.gmail.nossr50.commands.party;
 
 import org.bukkit.ChatColor;
-import org.bukkit.OfflinePlayer;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -43,12 +42,12 @@ public class PartyInfoCommand implements CommandExecutor {
         StringBuilder memberList = new StringBuilder();
 
         for (String memberName : playerParty.getMembers()) {
-            OfflinePlayer member = mcMMO.p.getServer().getOfflinePlayer(memberName);
+            Player member = mcMMO.p.getServer().getPlayerExact(memberName);
 
             if (playerParty.getLeader().equalsIgnoreCase(memberName)) {
                 memberList.append(ChatColor.GOLD);
             }
-            else if (member.isOnline()) {
+            else if (member != null) {
                 memberList.append(ChatColor.WHITE);
             }
             else {

src/main/java/com/gmail/nossr50/listeners/EntityListener.java

@@ -403,7 +403,7 @@ public class EntityListener implements Listener {
         }
 
         // We can make this assumption because we (should) be the only ones using this exact metadata
-        Player player = plugin.getServer().getPlayer(entity.getMetadata(mcMMO.tntMetadataKey).get(0).asString());
+        Player player = plugin.getServer().getPlayerExact(entity.getMetadata(mcMMO.tntMetadataKey).get(0).asString());
 
         if (Misc.isNPCEntity(player)) {
             return;
@@ -430,7 +430,7 @@ public class EntityListener implements Listener {
         }
 
         // We can make this assumption because we (should) be the only ones using this exact metadata
-        Player player = plugin.getServer().getPlayer(entity.getMetadata(mcMMO.tntMetadataKey).get(0).asString());
+        Player player = plugin.getServer().getPlayerExact(entity.getMetadata(mcMMO.tntMetadataKey).get(0).asString());
 
         if (Misc.isNPCEntity(player)) {
             return;

src/main/java/com/gmail/nossr50/runnables/commands/McrankCommandDisplayTask.java

@@ -25,7 +25,7 @@ public class McrankCommandDisplayTask extends BukkitRunnable {
 
     @Override
     public void run() {
-        Player player = mcMMO.p.getServer().getPlayer(playerName);
+        Player player = mcMMO.p.getServer().getPlayerExact(playerName);
         Integer rank;
 
         sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Heading"));