diff --git a/Gemfile b/Gemfile
index 92d7a16..96ec8fd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,6 +34,8 @@ gem 'devise_token_auth'
 
 gem 'rack-cors'
 
+gem 'active_model_serializers'
+
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platforms: %i[mri mingw x64_mingw]
diff --git a/Gemfile.lock b/Gemfile.lock
index 77022e1..8799818 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,6 +24,11 @@ GEM
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    active_model_serializers (0.10.8)
+      actionpack (>= 4.1, < 6)
+      activemodel (>= 4.1, < 6)
+      case_transform (>= 0.2)
+      jsonapi-renderer (>= 0.1.1.beta1, < 0.3)
     activejob (5.2.1)
       activesupport (= 5.2.1)
       globalid (>= 0.3.6)
@@ -49,6 +54,8 @@ GEM
       msgpack (~> 1.0)
     builder (3.2.3)
     byebug (10.0.2)
+    case_transform (0.2)
+      activesupport
     coderay (1.1.2)
     concurrent-ruby (1.1.3)
     coveralls (0.7.1)
@@ -90,6 +97,7 @@ GEM
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.1)
     json (2.1.0)
+    jsonapi-renderer (0.2.0)
     kramdown (1.17.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -246,6 +254,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  active_model_serializers
   bootsnap (>= 1.1.0)
   byebug
   coveralls
diff --git a/app/controllers/matches_controller.rb b/app/controllers/matches_controller.rb
new file mode 100644
index 0000000..a00c1c7
--- /dev/null
+++ b/app/controllers/matches_controller.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class MatchesController < ApplicationController
+  # GET /matches/1
+  def show
+    render json: Match.find(params[:id]), include: ['scores.score', 'scores.team'], status: status
+  end
+
+  private
+
+  def match_params
+    ActiveModelSerializers::Deserialization.jsonapi_parse(params, only: [:state])
+  end
+end
diff --git a/app/serializers/application_serializer.rb b/app/serializers/application_serializer.rb
new file mode 100644
index 0000000..589d634
--- /dev/null
+++ b/app/serializers/application_serializer.rb
@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class ApplicationSerializer < ActiveModel::Serializer
+end
diff --git a/app/serializers/match_serializer.rb b/app/serializers/match_serializer.rb
new file mode 100644
index 0000000..d608775
--- /dev/null
+++ b/app/serializers/match_serializer.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class MatchSerializer < ApplicationSerializer
+  attributes :state
+
+  has_many :scores
+end
diff --git a/app/serializers/score_serializer.rb b/app/serializers/score_serializer.rb
new file mode 100644
index 0000000..08ef59d
--- /dev/null
+++ b/app/serializers/score_serializer.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class ScoreSerializer < ApplicationSerializer
+  attributes :score
+
+  has_one :team
+end
diff --git a/app/serializers/team_serializer.rb b/app/serializers/team_serializer.rb
new file mode 100644
index 0000000..cf33a86
--- /dev/null
+++ b/app/serializers/team_serializer.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class TeamSerializer < ApplicationSerializer
+  attributes :name
+end
diff --git a/config/initializers/active_model_serializers.rb b/config/initializers/active_model_serializers.rb
new file mode 100644
index 0000000..6f85768
--- /dev/null
+++ b/config/initializers/active_model_serializers.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+ActiveModelSerializers.config.adapter = :json_api
diff --git a/config/routes.rb b/config/routes.rb
index bca9222..b10df31 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -2,4 +2,6 @@
 
 Rails.application.routes.draw do
   mount_devise_token_auth_for 'User', at: 'users'
+
+  resources :matches, only: %i[show]
 end
diff --git a/spec/controllers/matches_controller_spec.rb b/spec/controllers/matches_controller_spec.rb
new file mode 100644
index 0000000..47fc9fb
--- /dev/null
+++ b/spec/controllers/matches_controller_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe MatchesController, type: :controller do
+  let(:valid_attributes) do
+    skip('Add a hash of attributes valid for your model')
+  end
+
+  let(:invalid_attributes) do
+    skip('Add a hash of attributes invalid for your model')
+  end
+
+  let(:valid_session) { {} }
+
+  before do
+    @match = create(:match)
+    @match.scores = create_pair(:score)
+  end
+
+  describe 'GET #show' do
+    it 'should return success' do
+      get :show, params: { id: @match.to_param }
+      expect(response).to be_successful
+      expect(response.content_type).to eq('application/json')
+    end
+
+    it 'should return the correct state' do
+      get :show, params: { id: @match.to_param }
+      body = ActiveModelSerializers::Deserialization.jsonapi_parse(JSON.parse(response.body))
+      expect(body[:state]).to be(@match.state)
+      expect(body[:score_ids]).to eq(@match.scores.map { |score| score.id.to_s })
+    end
+  end
+end
diff --git a/spec/routing/matches_routing_spec.rb b/spec/routing/matches_routing_spec.rb
new file mode 100644
index 0000000..f0f4806
--- /dev/null
+++ b/spec/routing/matches_routing_spec.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe MatchesController, type: :routing do
+  describe 'routing' do
+    it 'routes to #show' do
+      expect(get: '/matches/1').to route_to('matches#show', id: '1')
+    end
+  end
+end