diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f79a6bf497af5535154a5aa7f7bc98fca47db11..a1ab5664d85a9eaca400299c72c6c983d89768b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ The format is based on [keep a changelog](http://keepachangelog.com) and this pr
 ### Added
 - Allow the socket acceptor to read session tokens from request headers.
 - Add support for custom response headers set in server configuration.
+- Add missing fields to tournament end and reset JS runtime hooks.
 
 ### Changed
 - Stricter validation of limit in runtime storage list operations.
diff --git a/server/runtime_javascript.go b/server/runtime_javascript.go
index 57fd539d2782e3d04e35263030e8f926afe15b44..3b3e82d914be455f84ccf37af112ae52864a33d5 100644
--- a/server/runtime_javascript.go
+++ b/server/runtime_javascript.go
@@ -1836,7 +1836,13 @@ func (rp *RuntimeProviderJS) TournamentEnd(ctx context.Context, tournament *api.
 	tournamentObj.Set("startActive", tournament.StartActive)
 	tournamentObj.Set("endActive", tournament.EndActive)
 	tournamentObj.Set("canEnter", tournament.CanEnter)
-	tournamentObj.Set("nextReset", tournament.NextReset)
+	if tournament.PrevReset != 0 {
+		tournamentObj.Set("prevReset", tournament.PrevReset)
+	}
+	if tournament.NextReset != 0 {
+		tournamentObj.Set("nextReset", tournament.NextReset)
+	}
+	tournamentObj.Set("operator", strings.ToLower(tournament.Operator.String()))
 	metadataMap := make(map[string]interface{})
 	err = json.Unmarshal([]byte(tournament.Metadata), &metadataMap)
 	if err != nil {
@@ -1906,7 +1912,13 @@ func (rp *RuntimeProviderJS) TournamentReset(ctx context.Context, tournament *ap
 	tournamentObj.Set("startActive", tournament.StartActive)
 	tournamentObj.Set("endActive", tournament.EndActive)
 	tournamentObj.Set("canEnter", tournament.CanEnter)
-	tournamentObj.Set("nextReset", tournament.NextReset)
+	if tournament.PrevReset != 0 {
+		tournamentObj.Set("prevReset", tournament.PrevReset)
+	}
+	if tournament.NextReset != 0 {
+		tournamentObj.Set("nextReset", tournament.NextReset)
+	}
+	tournamentObj.Set("operator", strings.ToLower(tournament.Operator.String()))
 	metadataMap := make(map[string]interface{})
 	err = json.Unmarshal([]byte(tournament.Metadata), &metadataMap)
 	if err != nil {