diff --git a/README.md b/README.md
index 63bc3faeb..a4be7ac71 100644
--- a/README.md
+++ b/README.md
@@ -175,37 +175,7 @@ using (tracer.StartActiveSpan("incoming HTTP request", SpanKind.Server, out var
 
 ### Context propagation out of process
 
-When instrumenting transport-layer operations, instrumentation should support context propagation.
-
-```csharp
-// this extracts W3C trace-context from incoming HTTP request
-// context may be valid if present and correct in the headers
-// or invalid if there was no context (or it was not valid)
-// instrumentation code should not care about it
-var context = tracer.TextFormat.Extract(incomingRequest.Headers, (headers, name) => headers[name]);
-
-var incomingSpan = tracer.StartSpan("incoming http request", context, SpanKind.Server);
-
-var outgoingRequest = new HttpRequestMessage(HttpMethod.Get, "http://microsoft.com");
-var outgoingSpan = tracer.StartSpan("outgoing http request", SpanKind.Client);
-
-// now that we have outgoing span, we can inject it's context
-// Note that if there is no SDK configured, tracer is noop -
-// it creates noop spans with invalid context. we should not propagate it.
-if (outgoingSpan.Context.IsValid)
-{
-    tracer.TextFormat.Inject(
-        outgoingSpan.Context,
-        outgoingRequest.Headers,
-        (headers, name, value) => headers.Add(name, value));
-}
-
-// make outgoing call
-// ...
-
-outgoingSpan.End();
-incomingSpan.End();
-```
+Examples will be added once [Global Propagators API is added.](https://github.com/open-telemetry/opentelemetry-dotnet/issues/581)
 
 ### Auto-adapter implementation for Activity/DiagnosticSource
 
diff --git a/src/OpenTelemetry/Trace/TracerSdk.cs b/src/OpenTelemetry/Trace/TracerSdk.cs
index a97692862..64c48eaaa 100644
--- a/src/OpenTelemetry/Trace/TracerSdk.cs
+++ b/src/OpenTelemetry/Trace/TracerSdk.cs
@@ -79,16 +79,16 @@ namespace OpenTelemetry.Trace
         }
 
         /// <inheritdoc/>
-        public override TelemetrySpan StartSpan(string operationName, TelemetrySpan parent, SpanKind kind, SpanCreationOptions options)
+        public override TelemetrySpan StartSpan(string operationName, TelemetrySpan parentSpan, SpanKind kind, SpanCreationOptions options)
         {
-            if (parent == null)
+            if (parentSpan == null)
             {
-                parent = this.CurrentSpan;
+                parentSpan = this.CurrentSpan;
             }
 
             return SpanSdk.CreateFromParentSpan(
                 operationName,
-                parent,
+                parentSpan,
                 kind,
                 options,
                 this.sampler,
@@ -98,13 +98,13 @@ namespace OpenTelemetry.Trace
         }
 
         /// <inheritdoc/>
-        public override TelemetrySpan StartSpan(string operationName, in SpanContext parent, SpanKind kind, SpanCreationOptions options)
+        public override TelemetrySpan StartSpan(string operationName, in SpanContext parentContext, SpanKind kind, SpanCreationOptions options)
         {
-            if (parent.IsValid)
+            if (parentContext.IsValid)
             {
                 return SpanSdk.CreateFromParentContext(
                     operationName,
-                    parent,
+                    parentContext,
                     kind,
                     options,
                     this.sampler,