diff --git a/benchmark/BasicBench.php b/benchmark/BasicBench.php
new file mode 100644
index 0000000..29b17fa
--- /dev/null
+++ b/benchmark/BasicBench.php
@@ -0,0 +1,134 @@
+<?php
+
+namespace DNW\Skills\Benchmark;
+
+use DNW\Skills\TrueSkill\TwoPlayerTrueSkillCalculator;
+use DNW\Skills\TrueSkill\TwoTeamTrueSkillCalculator;
+use DNW\Skills\TrueSkill\FactorGraphTrueSkillCalculator;
+use DNW\Skills\GameInfo;
+use DNW\Skills\Player;
+use DNW\Skills\Team;
+use DNW\Skills\Teams;
+
+class BasicBench
+{
+    /**
+     * @Revs(20)
+     * @Iterations(20)
+     */
+    public function benchBasic2PlayersUsingTwoPlayerTrueSkillCalculator(): void
+    {
+        $gameInfo = new GameInfo();
+
+        $p1 = new Player("Winner");
+        $p2 = new Player("Average");
+
+        $team1 = new Team($p1, $gameInfo->getDefaultRating());
+        $team2 = new Team($p2, $gameInfo->getDefaultRating());
+
+        for ($i = 0; $i < 10; $i++) {
+            $teams = Teams::concat($team1, $team2);
+
+            $calculator = new TwoPlayerTrueSkillCalculator();
+
+            $newRatings = $calculator->calculateNewRatings($gameInfo, $teams, [1, 2]);
+
+            $team1 = new Team($p1, $newRatings->getRating($p1));
+            $team2 = new Team($p2, $newRatings->getRating($p2));
+
+            $newRatings->getRating($p1)->getConservativeRating();
+            $newRatings->getRating($p2)->getConservativeRating();
+        }
+    }
+
+    /**
+     * @Revs(20)
+     * @Iterations(20)
+     */
+    public function benchBasic2PlayersUsingTwoTeamTrueSkillCalculator(): void
+    {
+        $gameInfo = new GameInfo();
+
+        $p1 = new Player("Winner");
+        $p2 = new Player("Average");
+
+        $team1 = new Team($p1, $gameInfo->getDefaultRating());
+        $team2 = new Team($p2, $gameInfo->getDefaultRating());
+
+        for ($i = 0; $i < 10; $i++) {
+            $teams = Teams::concat($team1, $team2);
+
+            $calculator = new TwoTeamTrueSkillCalculator();
+
+            $newRatings = $calculator->calculateNewRatings($gameInfo, $teams, [1, 2]);
+
+            $team1 = new Team($p1, $newRatings->getRating($p1));
+            $team2 = new Team($p2, $newRatings->getRating($p2));
+
+            $newRatings->getRating($p1)->getConservativeRating();
+            $newRatings->getRating($p2)->getConservativeRating();
+        }
+    }
+
+    /**
+     * @Revs(20)
+     * @Iterations(20)
+     */
+    public function benchBasic2PlayersUsingFactorGraphTrueSkillCalculator(): void
+    {
+        $gameInfo = new GameInfo();
+
+        $p1 = new Player("Winner");
+        $p2 = new Player("Average");
+
+        $team1 = new Team($p1, $gameInfo->getDefaultRating());
+        $team2 = new Team($p2, $gameInfo->getDefaultRating());
+
+        for ($i = 0; $i < 10; $i++) {
+            $teams = Teams::concat($team1, $team2);
+
+            $calculator = new FactorGraphTrueSkillCalculator();
+
+            $newRatings = $calculator->calculateNewRatings($gameInfo, $teams, [1, 2]);
+
+            $team1 = new Team($p1, $newRatings->getRating($p1));
+            $team2 = new Team($p2, $newRatings->getRating($p2));
+
+            $newRatings->getRating($p1)->getConservativeRating();
+            $newRatings->getRating($p2)->getConservativeRating();
+        }
+    }
+
+    /**
+     * @Revs(20)
+     * @Iterations(20)
+     */
+    public function bench3Teams(): void
+    {
+        $gameInfo = new GameInfo();
+
+        $p1 = new Player("Winner");
+        $p2 = new Player("Average");
+        $p3 = new Player("Looser");
+
+        $team1 = new Team($p1, $gameInfo->getDefaultRating());
+        $team2 = new Team($p2, $gameInfo->getDefaultRating());
+        $team3 = new Team($p3, $gameInfo->getDefaultRating());
+        
+        for ($i = 0; $i < 10; $i++) {
+            $teams = Teams::concat($team1, $team2, $team3);
+
+            $calculator = new FactorGraphTrueSkillCalculator();
+
+            $newRatings = $calculator->calculateNewRatings($gameInfo, $teams, [1, 2, 3]);
+
+            $team1 = new Team($p1, $newRatings->getRating($p1));
+            $team2 = new Team($p2, $newRatings->getRating($p2));
+            $team3 = new Team($p3, $newRatings->getRating($p3));
+
+            $newRatings->getRating($p1)->getConservativeRating();
+            $newRatings->getRating($p2)->getConservativeRating();
+            $newRatings->getRating($p3)->getConservativeRating();
+        }
+    }
+}
diff --git a/composer.json b/composer.json
index 25a3a05..fa50db5 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,8 @@
     "phpunit/phpunit": "^10",
     "phpstan/phpstan": "^1",
     "squizlabs/php_codesniffer": "*",
-    "vimeo/psalm": "^5.14"
+    "vimeo/psalm": "^5.14",
+    "phpmetrics/phpmetrics": "^3.0-dev"
   },
   "autoload": {
     "psr-4": {
@@ -25,6 +26,8 @@
     "test":          "vendor/bin/phpunit tests --display-warnings",
     "test-coverage": "vendor/bin/phpunit tests --testdox --coverage-filter src --coverage-html output/coverage --coverage-text --testdox-html output/test.html  --log-junit output/test.xml", 
     "document":      "phpDocumentor --setting=graphs.enabled=true", 
+    "benchmark":     "phpbench run --report=default --output=build-artifact",
+    "metrics":       "vendor/bin/phpmetrics --config=phpmetrics.json",
     "analyze": [
         "@analyze-phpstan",
         "@analyze-psalm",
@@ -32,6 +35,6 @@
     ],
     "analyze-phpstan":"vendor/bin/phpstan analyze --error-format=raw",
     "analyze-psalm":  "vendor/bin/psalm --no-cache",
-    "analyze-phpcs":  "vendor/bin/phpcs --report=emacs --standard=PSR1,PSR2,PSR12 --exclude=Generic.Files.LineLength src tests"
+    "analyze-phpcs":  "vendor/bin/phpcs --report=emacs --standard=PSR1,PSR2,PSR12 --exclude=Generic.Files.LineLength src tests benchmark"
   }
 }
diff --git a/composer.lock b/composer.lock
index 2aba8e7..952df3a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "667bb75c25a72b3d35f64ada9d9d9e0d",
+    "content-hash": "9d079e1055ee327f2d46ed48b8a25cd6",
     "packages": [],
     "packages-dev": [
         {
@@ -1082,6 +1082,82 @@
             },
             "time": "2024-01-11T11:49:22+00:00"
         },
+        {
+            "name": "phpmetrics/phpmetrics",
+            "version": "v3.0.0rc5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpmetrics/PhpMetrics.git",
+                "reference": "7a4ee5d6a8233f449fb9125ad586d3880c8a1b2f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpmetrics/PhpMetrics/zipball/7a4ee5d6a8233f449fb9125ad586d3880c8a1b2f",
+                "reference": "7a4ee5d6a8233f449fb9125ad586d3880c8a1b2f",
+                "shasum": ""
+            },
+            "require": {
+                "ext-tokenizer": "*",
+                "nikic/php-parser": "^4",
+                "php": ">=8.1"
+            },
+            "replace": {
+                "halleck45/php-metrics": "*",
+                "halleck45/phpmetrics": "*"
+            },
+            "require-dev": {
+                "phake/phake": "^4.4.0",
+                "phpstan/extension-installer": "^1.3",
+                "phpstan/phpstan": "^1.10",
+                "phpstan/phpstan-deprecation-rules": "^1.1",
+                "phpstan/phpstan-phpunit": "^1.3",
+                "phpstan/phpstan-strict-rules": "^1.5",
+                "phpunit/phpunit": "^10.3",
+                "roave/security-advisories": "dev-latest",
+                "sebastian/comparator": ">=5.0.0",
+                "squizlabs/php_codesniffer": "^3.7",
+                "symfony/dom-crawler": "^6.3",
+                "vimeo/psalm": "^5.15"
+            },
+            "suggest": {
+                "ext-dom": "To allow XML parsing and report results.",
+                "ext-yaml": "To allow yaml parsing of configuration files."
+            },
+            "bin": [
+                "bin/phpmetrics"
+            ],
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Hal\\": "src/Hal"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jean-François Lépine",
+                    "email": "lepinejeanfrancois@yahoo.fr",
+                    "homepage": "http://www.lepine.pro",
+                    "role": "Copyright Holder"
+                }
+            ],
+            "description": "Static analyzer tool for PHP : Coupling, Cyclomatic complexity, Maintainability Index, Halstead's metrics... and more !",
+            "homepage": "http://www.phpmetrics.org",
+            "keywords": [
+                "analysis",
+                "qa",
+                "quality",
+                "testing"
+            ],
+            "support": {
+                "issues": "https://github.com/PhpMetrics/PhpMetrics/issues",
+                "source": "https://github.com/phpmetrics/PhpMetrics/tree/v3.0.0rc5"
+            },
+            "time": "2024-01-17T10:59:12+00:00"
+        },
         {
             "name": "phpstan/phpdoc-parser",
             "version": "1.25.0",
@@ -3649,7 +3725,9 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "phpmetrics/phpmetrics": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/phpbench.json b/phpbench.json
new file mode 100644
index 0000000..da058c9
--- /dev/null
+++ b/phpbench.json
@@ -0,0 +1,11 @@
+{
+    "runner.bootstrap": "vendor/autoload.php",
+    "runner.path": "benchmark/",
+    "report.outputs": {
+        "build-artifact": {
+            "renderer": "html",
+            "path": "output/benchmark.html",
+            "title": "Benchmarking"
+        }
+   }
+}
diff --git a/phpmetrics.json b/phpmetrics.json
new file mode 100644
index 0000000..126349b
--- /dev/null
+++ b/phpmetrics.json
@@ -0,0 +1,20 @@
+{
+    "composer": true,
+    "includes": [
+      "src"
+    ],
+    "excludes": [
+      "tests"
+    ],
+    "report": {
+      "html": "output/metrics/"
+    },
+    "plugins": {
+      "git": {
+        "binary": "git"
+      },
+      "junit": {
+        "file": "output/test.xml"
+      }
+    }
+}
\ No newline at end of file
diff --git a/phpstan.neon b/phpstan.neon
index 54e6f5d..3722374 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -3,3 +3,4 @@ parameters:
 	paths:
 		- src
 		- tests
+		- benchmark
diff --git a/psalm.xml b/psalm.xml
index 9edc19d..e43a882 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -11,6 +11,7 @@
     <projectFiles>
         <directory name="src" />
         <directory name="tests" />
+        <directory name="benchmark" />
         <ignoreFiles>
             <directory name="vendor" />
         </ignoreFiles>
diff --git a/tests/PlayerTest.php b/tests/PlayerTest.php
new file mode 100644
index 0000000..de7176f
--- /dev/null
+++ b/tests/PlayerTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace DNW\Skills\Tests;
+
+use DNW\Skills\Player;
+use PHPUnit\Framework\TestCase;
+
+class PlayerTest extends TestCase
+{
+    public function test(): void
+    {
+        $p = new Player('dummy', 0.1, 0.2);
+        $this->assertEquals('dummy', (string)$p);
+        $this->assertEquals(0.1, $p->getPartialPlayPercentage());
+        $this->assertEquals(0.2, $p->getPartialUpdatePercentage());
+    }
+}