Warning: apc_store(): Potential cache slam averted for key 'w3tc_blogs.thescore.com_object_9ee1addf54ad00867451ed4d367f2c40' in /opt/blogs/wp-content/plugins/w3-total-cache/lib/W3/Cache/Apc.php on line 41 Calvin Johnson tested for a concussion, returns to game | 100 Yards and Running | Blogs | theScore.com

Update: Megatron has returned to the game. Fantasy owners (and Lions fans) can breathe easy.