diff --git a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairgothApiHandler.kt b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairgothApiHandler.kt
index fc5297c..ac7cd69 100644
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairgothApiHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairgothApiHandler.kt
@@ -6,6 +6,10 @@ import javax.servlet.http.HttpServletRequest
 
 interface PairgothApiHandler: ApiHandler {
 
-    fun getTournament(request: HttpServletRequest): Tournament? = getSelector(request)?.toIntOrNull()?.let { Store.getTournament(it) }
+    fun getTournament(request: HttpServletRequest): Tournament {
+        val tournamentId = getSelector(request)?.toIntOrNull() ?: ApiHandler.badRequest("invalid tournament id")
+        return Store.getTournament(tournamentId) ?: ApiHandler.badRequest("unknown tournament id")
+    }
+
 
 }
\ No newline at end of file
diff --git a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairingHandler.kt b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairingHandler.kt
index b6ff0c9..e12351e 100644
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairingHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairingHandler.kt
@@ -9,18 +9,15 @@ import org.jeudego.pairgoth.model.toJson
 import org.jeudego.pairgoth.store.Store
 import javax.servlet.http.HttpServletRequest
 
-object PairingHandler: ApiHandler {
-
-    private fun getTournament(request: HttpServletRequest): Tournament {
-        val tournamentId = getSelector(request)?.toIntOrNull() ?: badRequest("invalid tournament id")
-        return Store.getTournament(tournamentId) ?: badRequest("unknown tournament id")
-    }
+object PairingHandler: PairgothApiHandler {
 
     override fun get(request: HttpServletRequest): Json {
         val tournament = getTournament(request)
         val round = getSubSelector(request)?.toIntOrNull() ?: badRequest("invalid round number")
-        val games = tournament.games.getOrNull(round)?.values ?: emptyList()
-        return games.map { it.toJson() }.toJsonArray()
+        val playing = (tournament.games.getOrNull(round)?.values ?: emptyList()).flatMap {
+            listOf(it.black, it.white)
+        }.toSet()
+        return tournament.pairables.values.filter { !it.skip.contains(round) && !playing.contains(it.id) }.toJsonArray()
     }
 
     override fun post(request: HttpServletRequest): Json {
@@ -29,25 +26,21 @@ object PairingHandler: ApiHandler {
         val payload = getArrayPayload(request)
         val allPlayers = payload.size == 1 && payload[0] == "all"
         if (!allPlayers && tournament.pairing.type == Pairing.PairingType.SWISS) badRequest("Swiss pairing requires all pairable players")
+        val playing = (tournament.games.getOrNull(round)?.values ?: emptyList()).flatMap {
+            listOf(it.black, it.white)
+        }.toSet()
         val pairables =
             if (allPlayers)
-                tournament.pairables.values.filter { !it.skip.contains(round) }
+                tournament.pairables.values.filter { !it.skip.contains(round) && !playing.contains(it.id) }
             else payload.map {
+                // CB - because of the '["all"]' map, conversion to int lands here... Better API syntax for 'all players'?
                 if (it is Number) it.toInt() else badRequest("invalid pairable id: #$it")
             }.map { id ->
                 tournament.pairables[id]?.also {
                     if (it.skip.contains(round)) badRequest("pairable #$id does not play round $round")
+                    if (playing.contains(it.id)) badRequest("pairable #$id already plays round $round")
                 } ?: badRequest("invalid pairable id: #$id")
             }
-        // check players are not already implied in games in this round
-        val pairablesIDs = pairables.map { it.id }.toSet()
-        tournament.games.getOrNull(round)?.let { games ->
-            games.values.mapNotNull { game ->
-                if (pairablesIDs.contains(game.black)) game.black else if (pairablesIDs.contains(game.white)) game.white else null
-            }.let {
-                if (it.isNotEmpty()) badRequest("The following players are already playing this round: ${it.joinToString { id -> "#${id}" }}")
-            }
-        }
         val games = tournament.pair(round, pairables)
         return games.map { it.toJson() }.toJsonArray()
     }
diff --git a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/ResultsHandler.kt b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/ResultsHandler.kt
index b87a022..1dbe1a6 100644
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/ResultsHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/ResultsHandler.kt
@@ -1,4 +1,47 @@
 package org.jeudego.pairgoth.api
 
-class ResultsHandler: ApiHandler {
-}
\ No newline at end of file
+import com.republicate.kson.Json
+import com.republicate.kson.toJsonArray
+import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
+import org.jeudego.pairgoth.model.Game
+import org.jeudego.pairgoth.model.Tournament
+import org.jeudego.pairgoth.model.toJson
+import org.jeudego.pairgoth.store.Store
+import javax.servlet.http.HttpServletRequest
+
+object ResultsHandler: PairgothApiHandler {
+
+    override fun get(request: HttpServletRequest): Json {
+        val tournament = getTournament(request)
+        val round = getSubSelector(request)?.toIntOrNull() ?: badRequest("invalid round number")
+        val games = tournament.games.getOrNull(round)?.values ?: emptyList()
+        return games.map { it.toJson() }.toJsonArray()
+    }
+
+    override fun post(request: HttpServletRequest): Json {
+        val tournament = getTournament(request)
+        val round = getSubSelector(request)?.toIntOrNull() ?: badRequest("invalid round number")
+        val payload = getObjectPayload(request)
+        val game = tournament.games[round][payload.getInt("id")] ?: badRequest("invalid game id")
+        game.result = Game.Result.valueOf(payload.getString("result") ?: badRequest("missing result"))
+        return Json.Object("success" to true)
+    }
+
+    override fun put(request: HttpServletRequest): Json {
+        val tournament = getTournament(request)
+        val round = getSubSelector(request)?.toIntOrNull() ?: badRequest("invalid round number")
+        val payload = getObjectPayload(request)
+        val game = tournament.games[round][payload.getInt("id")] ?: badRequest("invalid game id")
+        game.result = Game.Result.valueOf(payload.getString("result") ?: badRequest("missing result"))
+        return Json.Object("success" to true)
+    }
+
+    override fun delete(request: HttpServletRequest): Json {
+        val tournament = getTournament(request)
+        val round = getSubSelector(request)?.toIntOrNull() ?: badRequest("invalid round number")
+        val payload = getObjectPayload(request)
+        val game = tournament.games[round][payload.getInt("id")] ?: badRequest("invalid game id")
+        tournament.games[round].remove(payload.getInt("id") ?: badRequest("invalid game id"))  ?: badRequest("invalid game id")
+        return Json.Object("success" to true)
+    }
+}
diff --git a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/StandingsHandler.kt b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/StandingsHandler.kt
index 9dbc249..d83dc20 100644
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/StandingsHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/StandingsHandler.kt
@@ -1,4 +1,4 @@
 package org.jeudego.pairgoth.api
 
-class StandingsHandler: ApiHandler {
+object StandingsHandler: PairgothApiHandler {
 }
\ No newline at end of file
diff --git a/webapp/src/main/kotlin/org/jeudego/pairgoth/web/ApiServlet.kt b/webapp/src/main/kotlin/org/jeudego/pairgoth/web/ApiServlet.kt
index e4ba9cc..229e972 100644
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/web/ApiServlet.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/web/ApiServlet.kt
@@ -4,6 +4,7 @@ import com.republicate.kson.Json
 import org.jeudego.pairgoth.api.ApiHandler
 import org.jeudego.pairgoth.api.PairingHandler
 import org.jeudego.pairgoth.api.PlayerHandler
+import org.jeudego.pairgoth.api.ResultsHandler
 import org.jeudego.pairgoth.api.TournamentHandler
 import org.jeudego.pairgoth.util.Colorizer.blue
 import org.jeudego.pairgoth.util.Colorizer.green
@@ -84,6 +85,7 @@ class ApiServlet : HttpServlet() {
                         null -> TournamentHandler
                         "part" -> PlayerHandler
                         "pair" -> PairingHandler
+                        "res" -> ResultsHandler
                         else -> ApiHandler.badRequest("unknown sub-entity: $subEntity")
                     }
                 "player" -> PlayerHandler
diff --git a/webapp/src/test/kotlin/ImportTests.kt b/webapp/src/test/kotlin/ImportTests.kt
index 324c37f..ceaab92 100644
--- a/webapp/src/test/kotlin/ImportTests.kt
+++ b/webapp/src/test/kotlin/ImportTests.kt
@@ -13,8 +13,14 @@ class ImportTests: TestBase() {
             val resource = file.readText(StandardCharsets.UTF_8)
             val resp = TestAPI.post("/api/tour", resource)
             val id = resp.asObject().getInt("id")
-            val tournament = TestAPI.get("/api/tour/$id")
+            val tournament = TestAPI.get("/api/tour/$id").asObject()
             logger.info(tournament.toString())
+            val players = TestAPI.get("/api/tour/$id/part").asArray()
+            logger.info(players.toString())
+            for (round in 1..tournament.getInt("rounds")!!) {
+                val games = TestAPI.get("/api/tour/$id/res/1").asArray()
+                logger.info("games for round $round: {}", games.toString())
+            }
         }
     }
-}
\ No newline at end of file
+}