Per a league source, Merling has suffered an Achilles' tendon injury. http://profootballtalk.nbcsports.com/2010/07/22/source-phillip-merling-has-an-achilles-tendon-injury/
The extent of the injury, along with the timing and the cause, aren't known. The source said it's possible that the injury happened not during offseason workouts, making it a non-football injury.
If -- and we emphasize the if -- it's a non-football injury, the Dolphins can choose not to pay Merling's salary of $600,000, in the event he's unable to play in 2010.
Could this be the end for Merling? It would be a shame to see yet another wasted draft pick