htaccess redirect blog post that once had no category

I’d like to redirect this url:
http://www.tribunecontentagency.com/video-game-console-sales-will-soar-holiday-season/
to this url:
http://www.tribunecontentagency.com/blog/video-game-console-sales-will-soar-holiday-season/

I’ve tried this at the top of my htaccess (above the WordPress stuff):

#301 Redirect Old File
Redirectmatch 301 /video-game-console-sales-will-soar-holiday-season/ http://www.tribunecontentagency.com/blog/video-game-console-sales-will-soar-holiday-season/

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

But it creates a redirect loop. How can make this redirect work?