diff --git a/README.md b/README.md
index 8dc013f..e775227 100644
--- a/README.md
+++ b/README.md
@@ -99,9 +99,12 @@ cancels.
 Completed match results flash in place; the logos and card header are drawn once
 and stay stationary during the animation.
 
-The WWF.com logo remains at top left. The centered logo follows the show name:
-SmackDown shows use the SmackDown logo, Raw shows use the Raw logo, and other
-shows display no centered show logo.
+The WWF.com logo remains at top left on shows run by the World Wrestling
+Federation (any card from the built-in games, clones of them, or a BYOG
+federation named WWF/"World Wrestling Federation"). Federations with any other
+name get no corner logo, and their centered show logo is truly centered. The
+centered logo follows the show name: SmackDown shows use the SmackDown logo, Raw
+shows use the Raw logo, and other shows display no centered show logo.
 
 In the card view, use ↑/↓ (or `j`/`k`) to highlight a promo, press Enter to
 expand or collapse it, and use Page Up/Page Down to scroll while the header
diff --git a/smackdown_card_maker.py b/smackdown_card_maker.py
index 4eb4873..592541b 100644
--- a/smackdown_card_maker.py
+++ b/smackdown_card_maker.py
@@ -272,6 +272,11 @@ def game_display_name(game_id: str) -> str:
     return GAMES[game_id]["title"]
 
 
+def is_wwf_federation(name: str | None) -> bool:
+    folded = str(name or "").strip().casefold()
+    return folded in ("world wrestling federation", "wwf")
+
+
 def title_definitions_for_game(game_id: str,
                               profile: dict[str, Any] | None = None) -> list[dict[str, str]]:
     if profile and isinstance(profile.get("championships"), list):
@@ -1661,7 +1666,13 @@ def show_logo_path(show_name: str) -> Path | None:
 
 
 def header_lines(card: dict[str, Any], width: int) -> list[str]:
-    left, left_width = _render_image(ROOT / "wwfcomlogo.gif", 23, 6)
+    card_federation = str(card.get("federation_name")
+                          or federation_name(card["game_id"]))
+    is_wwf = is_wwf_federation(card_federation)
+    if is_wwf:
+        left, left_width = _render_image(ROOT / "wwfcomlogo.gif", 23, 6)
+    else:
+        left, left_width = [], 0
     logo_path = show_logo_path(card["show"])
     if logo_path:
         center, center_width = _render_image(logo_path, 38, 6)
@@ -1671,16 +1682,21 @@ def header_lines(card: dict[str, Any], width: int) -> list[str]:
             center_width = len(brand)
     else:
         center, center_width = [], 0
-    if not left:
+    if is_wwf and not left:
         left = [color("WWF.com", RED)]
         left_width = 7
     row_count = max(len(left), len(center), 2)
     if width < 62:
         title = card.get("game_title", game_title(card["game_id"]))
-        return [f"{color('WWF.com', RED)}   {color(title, CYAN)}",
+        heading = f"{color('WWF.com', RED)}   {color(title, CYAN)}" if is_wwf \
+            else color(title, CYAN)
+        return [heading,
                 f"{card['date']} · {show_location_text(card)}", ""]
     left_x = 1
-    center_x = max(left_x + left_width + 3, (width - center_width) // 2)
+    if left:
+        center_x = max(left_x + left_width + 3, (width - center_width) // 2)
+    else:
+        center_x = (width - center_width) // 2
     date_text = card["date"]
     date_x = width - len(date_text) - 2
     output: list[str] = []
diff --git a/test_smackdown_card_maker.py b/test_smackdown_card_maker.py
index 6f54575..a09f5f4 100644
--- a/test_smackdown_card_maker.py
+++ b/test_smackdown_card_maker.py
@@ -1132,6 +1132,70 @@ class HeaderLogoTests(unittest.TestCase):
             header = "\n".join(app.header_lines(card, 100))
         self.assertIn("RAW IS WAR", header)
 
+    def custom_card(self) -> dict:
+        card = MarkdownTests().make_card(Path("card.md"))
+        card["federation_name"] = "Fantasy Fed"
+        card["game_title"] = "Rumble Royale"
+        return card
+
+    def test_is_wwf_federation_matches_canonical_name_and_alias(self):
+        for name in ("World Wrestling Federation", "world wrestling federation",
+                     "WWF", " wwf "):
+            self.assertTrue(app.is_wwf_federation(name), name)
+        for name in ("Fantasy Fed", "WWE", "WCW", ""):
+            self.assertFalse(app.is_wwf_federation(name), name)
+
+    def test_corner_logo_only_renders_for_wwf_federations(self):
+        def image_mock(path, _columns, _rows):
+            if path.name == "wwfcomlogo.gif":
+                return ["IMG1"], 3
+            return ["C1"], 3
+
+        wwf_card = MarkdownTests().make_card(Path("card.md"))
+        wwf_card["show"] = "Monday Night Raw"
+        custom_card = self.custom_card()
+        custom_card["show"] = "Monday Night Raw"
+        with patch.object(app, "_render_image", side_effect=image_mock):
+            wwf_header = app.header_lines(wwf_card, 100)
+            custom_header = app.header_lines(custom_card, 100)
+        self.assertIn("IMG1", wwf_header[0])
+        self.assertFalse(any("IMG1" in line for line in custom_header))
+        # With no corner logo the centered show logo is truly centered (48 = (100-3)//2).
+        # With no corner logo the centered show logo is truly centered (48 = (100-3)//2)
+        # and the date still sits at the top-right of the same row.
+        self.assertTrue(custom_header[0].startswith(" " * 48 + "C1"), custom_header[0])
+        self.assertIn("2026-10-25", custom_header[0])
+        self.assertNotIn("WWF.com", "\n".join(app.header_lines(custom_card, 100)))
+
+    def test_wwf_alias_federations_render_the_corner_logo(self):
+        image_mock = lambda path, _columns, _rows: (["IMG1"], 3)
+        for federation in ("WWF", "world wrestling federation"):
+            card = self.custom_card()
+            card["federation_name"] = federation
+            with patch.object(app, "_render_image", side_effect=image_mock):
+                header = app.header_lines(card, 100)
+            self.assertIn("IMG1", header[0], federation)
+
+    def test_corner_logo_text_fallback_only_for_wwf_federations(self):
+        wwf_card = MarkdownTests().make_card(Path("card.md"))
+        custom_card = self.custom_card()
+        with patch.object(app, "_render_image", return_value=([], 0)):
+            wwf_header = "\n".join(app.header_lines(wwf_card, 100))
+            custom_header = "\n".join(app.header_lines(custom_card, 100))
+        self.assertIn("WWF.com", wwf_header)
+        self.assertNotIn("WWF.com", custom_header)
+
+    def test_narrow_custom_federation_header_drops_wwf_branding(self):
+        wwf_card = MarkdownTests().make_card(Path("card.md"))
+        custom_card = self.custom_card()
+        wwf_header = "\n".join(app.header_lines(wwf_card, 60))
+        custom_header = "\n".join(app.header_lines(custom_card, 60))
+        self.assertIn("WWF.com", wwf_header)
+        self.assertNotIn("WWF.com", custom_header)
+        self.assertIn("Rumble Royale", custom_header)
+        for header in (wwf_header, custom_header):
+            self.assertIn("2026-10-25", header)
+
 
 class PromoFoldingTests(unittest.TestCase):
     def card_with_promos(self) -> dict: