The “Max Effort” badge is awarded to owners who have achieved 162 games played at every offensive position (including 810 GP at OF) in a single season.
To earn this badge, you must reply to this thread by posting a link to your final lineup page showing you’ve maxed out GP at every position.
You can earn this badge multiple times.
You can view a list of all potential badges here.
Hat tip to @davecarlton412 for this badge idea.