diff --git a/core/src/main/java/io/substrait/relation/AbstractReadRel.java b/core/src/main/java/io/substrait/relation/AbstractReadRel.java
index b640916c..51df27fc 100644
--- a/core/src/main/java/io/substrait/relation/AbstractReadRel.java
+++ b/core/src/main/java/io/substrait/relation/AbstractReadRel.java
@@ -11,6 +11,8 @@ public abstract class AbstractReadRel extends ZeroInputRel implements HasExtensi
 
   public abstract Optional<Expression> getFilter();
 
+  public abstract Optional<Expression> getBestEffortFilter();
+
   // TODO:
   // public abstract Optional<MaskExpression>
 
diff --git a/core/src/main/java/io/substrait/relation/ProtoRelConverter.java b/core/src/main/java/io/substrait/relation/ProtoRelConverter.java
index 130e3aa4..7ec44b37 100644
--- a/core/src/main/java/io/substrait/relation/ProtoRelConverter.java
+++ b/core/src/main/java/io/substrait/relation/ProtoRelConverter.java
@@ -183,6 +183,13 @@ protected EmptyScan newEmptyScan(ReadRel rel) {
     var builder =
         EmptyScan.builder()
             .initialSchema(namedStruct)
+            .bestEffortFilter(
+                Optional.ofNullable(
+                    rel.hasBestEffortFilter()
+                        ? new ProtoExpressionConverter(
+                                lookup, extensions, namedStruct.struct(), this)
+                            .from(rel.getBestEffortFilter())
+                        : null))
             .filter(
                 Optional.ofNullable(
                     rel.hasFilter()
@@ -238,6 +245,13 @@ protected NamedScan newNamedScan(ReadRel rel) {
         NamedScan.builder()
             .initialSchema(namedStruct)
             .names(rel.getNamedTable().getNamesList())
+            .bestEffortFilter(
+                Optional.ofNullable(
+                    rel.hasBestEffortFilter()
+                        ? new ProtoExpressionConverter(
+                                lookup, extensions, namedStruct.struct(), this)
+                            .from(rel.getBestEffortFilter())
+                        : null))
             .filter(
                 Optional.ofNullable(
                     rel.hasFilter()
@@ -279,6 +293,13 @@ protected LocalFiles newLocalFiles(ReadRel rel) {
                 rel.getLocalFiles().getItemsList().stream()
                     .map(this::newFileOrFiles)
                     .collect(java.util.stream.Collectors.toList()))
+            .bestEffortFilter(
+                Optional.ofNullable(
+                    rel.hasBestEffortFilter()
+                        ? new ProtoExpressionConverter(
+                                lookup, extensions, namedStruct.struct(), this)
+                            .from(rel.getBestEffortFilter())
+                        : null))
             .filter(
                 Optional.ofNullable(
                     rel.hasFilter()
@@ -356,6 +377,9 @@ protected VirtualTableScan newVirtualTable(ReadRel rel) {
 
     var builder =
         VirtualTableScan.builder()
+            .bestEffortFilter(
+                Optional.ofNullable(
+                    rel.hasBestEffortFilter() ? converter.from(rel.getBestEffortFilter()) : null))
             .filter(Optional.ofNullable(rel.hasFilter() ? converter.from(rel.getFilter()) : null))
             .initialSchema(NamedStruct.fromProto(rel.getBaseSchema(), protoTypeConverter))
             .rows(structLiterals);
diff --git a/core/src/main/java/io/substrait/relation/RelProtoConverter.java b/core/src/main/java/io/substrait/relation/RelProtoConverter.java
index ce0aac7a..2b936c42 100644
--- a/core/src/main/java/io/substrait/relation/RelProtoConverter.java
+++ b/core/src/main/java/io/substrait/relation/RelProtoConverter.java
@@ -208,6 +208,7 @@ public Rel visit(NamedScan namedScan) throws RuntimeException {
             .setBaseSchema(namedScan.getInitialSchema().toProto(typeProtoConverter));
 
     namedScan.getFilter().ifPresent(f -> builder.setFilter(toProto(f)));
+    namedScan.getBestEffortFilter().ifPresent(f -> builder.setBestEffortFilter(toProto(f)));
 
     namedScan.getExtension().ifPresent(ae -> builder.setAdvancedExtension(ae.toProto()));
     return Rel.newBuilder().setRead(builder).build();
@@ -227,6 +228,7 @@ public Rel visit(LocalFiles localFiles) throws RuntimeException {
                     .build())
             .setBaseSchema(localFiles.getInitialSchema().toProto(typeProtoConverter));
     localFiles.getFilter().ifPresent(t -> builder.setFilter(toProto(t)));
+    localFiles.getBestEffortFilter().ifPresent(t -> builder.setBestEffortFilter(toProto(t)));
 
     localFiles.getExtension().ifPresent(ae -> builder.setAdvancedExtension(ae.toProto()));
     return Rel.newBuilder().setRead(builder.build()).build();
@@ -450,6 +452,7 @@ public Rel visit(VirtualTableScan virtualTableScan) throws RuntimeException {
             .setBaseSchema(virtualTableScan.getInitialSchema().toProto(typeProtoConverter));
 
     virtualTableScan.getFilter().ifPresent(f -> builder.setFilter(toProto(f)));
+    virtualTableScan.getBestEffortFilter().ifPresent(f -> builder.setBestEffortFilter(toProto(f)));
 
     virtualTableScan.getExtension().ifPresent(ae -> builder.setAdvancedExtension(ae.toProto()));
     return Rel.newBuilder().setRead(builder).build();
diff --git a/core/src/test/java/io/substrait/type/proto/ReadRelRoundtripTest.java b/core/src/test/java/io/substrait/type/proto/ReadRelRoundtripTest.java
index 028a07e0..c27201b5 100644
--- a/core/src/test/java/io/substrait/type/proto/ReadRelRoundtripTest.java
+++ b/core/src/test/java/io/substrait/type/proto/ReadRelRoundtripTest.java
@@ -25,6 +25,8 @@ void namedScan() {
     namedScan =
         NamedScan.builder()
             .from(namedScan)
+            .bestEffortFilter(
+                b.equal(b.fieldReference(namedScan, 0), b.fieldReference(namedScan, 1)))
             .filter(b.equal(b.fieldReference(namedScan, 0), b.fieldReference(namedScan, 1)))
             .build();
 
@@ -55,6 +57,8 @@ void virtualTable() {
     virtTable =
         VirtualTableScan.builder()
             .from(virtTable)
+            .bestEffortFilter(
+                b.equal(b.fieldReference(virtTable, 0), b.fieldReference(virtTable, 1)))
             .filter(b.equal(b.fieldReference(virtTable, 0), b.fieldReference(virtTable, 1)))
             .build();
     verifyRoundTrip(virtTable);