diff --git a/documentation/classDiagram.puml b/documentation/classDiagram.puml
index 8b54599..fc4a3d0 100644
--- a/documentation/classDiagram.puml
+++ b/documentation/classDiagram.puml
@@ -1,53 +1,47 @@
 @startuml Tournament System
 ' Internal development class diagram
 ' Describes database fields and object methods required
+
 title Tournament System - Group 1 
+skinparam Linetype ortho
+
+class User {
+    *user_id: Integer
+    google_id: String
+    name: String
+    email: String
+    isManager: Boolean
+}
 
 class Match {
     *match_id: Integer
     tournament_id: Integer
-    parent_id: Integer
+    parentMatch_id: Integer
     team1_id: Integer
     team2_id: Integer
     winner_id: Integer
-
-    Match constructor(tournament_id: Integer, team_ids: Integer[])
-    void setWinner(winner_id: Integer)
+    tier: Integer
 }
 class Team {
     *team_id: Integer
+    tournament_id: Integer
     name: String
-    tournament_ids Integer
-
-    Team constructor(name: String, tournamentId: Integer)
-    void addPlayer(player_id: Integer)
-    void removePlayer(player_id: Integer)
-}
-class Player {
-    *player_id: Integer
-    name: String
-    team_id: Integer
-
-
-    Player constructor(name: String)
-    void joinTeam(team_id: Integer)
-    void leaveTeam()
 }
 
 class Tournament {
     *tournament_id: Integer
     name: String
+    description: String
+    prize: String
+    teamLimit: Integer
     start_date: Date
     end_date: Date
-
-    Tournament constructor(name: String, start_date: Date, end_date: Date)
 }
 
 
-Team "2..*" -- "1..*" Tournament : "Plays in"
-Tournament "1" -- "1..*" Match : contains
-Player "1..*" -- "1..1" Team : "Belongs to"
-Team "2..2" -- "1..*" Match : "Competes in"
-
+Team "2..*" --- "1..1" Tournament : "Plays in"
+Team "2..2" --- "1..*" Match : "Competes in"
 
+left to right direction
+Tournament "1" --- "3..*" Match : contains
 @enduml
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