diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2035a59..9b6c053 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Allow named arguments and assignments for `provided` (`given`) block.
 - Add `aggregate_failures` to capture and report multiple failed expectations. [#24](https://gitlab.com/arctic-fox/spectator/-/issues/24)
 - Supports matching groups. [#25](https://gitlab.com/arctic-fox/spectator/-/issues/25) [#24](https://github.com/icy-arctic-fox/spectator/issues/24)
+- Add `filter_run_including`, `filter_run_excluding`, and `filter_run_when_matching` to config block.
+- By default, only run tests when any are marked with `focus: true`.
+- Add "f-prefix" blocks for examples and groups (`fit`, `fdescribe`, etc.) as a short-hand for specifying `focus: true`.
 
 ### Changed
 - `given` (now `provided`) blocks changed to produce a single example. `it` can no longer be nested in a `provided` block.
diff --git a/src/spectator/dsl/examples.cr b/src/spectator/dsl/examples.cr
index 38c62f0..03484ae 100644
--- a/src/spectator/dsl/examples.cr
+++ b/src/spectator/dsl/examples.cr
@@ -137,6 +137,12 @@ module Spectator::DSL
 
     define_example :specify
 
+    define_example :fexample, focus: true
+
+    define_example :fit, focus: true
+
+    define_example :fspecify, focus: true
+
     @[Deprecated("Behavior of pending blocks will change in Spectator v0.11.0. Use `skip` instead.")]
     define_pending_example :pending
 
diff --git a/src/spectator/dsl/groups.cr b/src/spectator/dsl/groups.cr
index 002860c..8f47b27 100644
--- a/src/spectator/dsl/groups.cr
+++ b/src/spectator/dsl/groups.cr
@@ -181,6 +181,12 @@ module Spectator::DSL
 
     define_example_group :xcontext, skip: "Temporarily skipped with xcontext"
 
+    define_example_group :fexample_group, focus: true
+
+    define_example_group :fdescribe, focus: true
+
+    define_example_group :fcontext, focus: true
+
     # Defines a new iterative example group.
     # This type of group duplicates its contents for each element in *collection*.
     #
@@ -197,6 +203,8 @@ module Spectator::DSL
     # :ditto:
     define_iterative_group :xsample, skip: "Temporarily skipped with xsample"
 
+    define_iterative_group :fsample, focus: true
+
     # Defines a new iterative example group.
     # This type of group duplicates its contents for each element in *collection*.
     # This is the same as `#sample` except that the items are shuffled.
@@ -218,5 +226,10 @@ module Spectator::DSL
     define_iterative_group :xrandom_sample, skip: "Temporarily skipped with xrandom_sample" do |collection|
       collection.to_a.shuffle(::Spectator.random)
     end
+
+    # :ditto:
+    define_iterative_group :frandom_sample, focus: true do |collection|
+      collection.to_a.shuffle(::Spectator.random)
+    end
   end
 end