diff --git a/2013/4-knockout/players.yml b/2013/4-knockout/players.yml
new file mode 100644
index 0000000..54cf08f
--- /dev/null
+++ b/2013/4-knockout/players.yml
@@ -0,0 +1,55 @@
+- number:  1
+  lor:     redgremlin
+  lichess: gremlin_the_red
+
+- number:  2
+  lor:     Magian
+  lichess: Magian
+
+- number:  3
+  lor:     iVS
+  lichess: iVS
+
+- number:  4
+  lor:     HunOL
+  lichess: HunOL
+
+- number:  5
+  lor:     Nedis
+  lichess: Nedis
+
+- number:  6
+  lor:     aptyp
+  lichess: aptypr
+
+- number:  7
+  lor:     Michkova
+  lichess: Michkova
+
+- number:  8
+  lor:     MyTrooName
+  lichess: sshilovsky
+
+- number:  9
+  lor:     Nokman
+  lichess: Nokman
+
+- number:  10
+  lor:     DoctorSinus
+  lichess: fat0troll
+
+- number:  11
+  lor:     shell-script
+  lichess: cppmm
+
+- number:  12
+  lor:     trex6
+  lichess: txgames
+
+- number:  13
+  lor:     Zodd
+  lichess: zodd
+
+- number:  14
+  lor:     nanonymous
+  lichess: n_lor