This thread is dedicated to those players who may have been considered as big talents when they were younger. But reasons such as injuries, attitude, lack of focus, poor decisions, etc they were never able to become the player that their original potential should have allowed them to be. I'll keep adding entries as time goes on. Everyone is welcome to contribute as well of course. Here are some players that come to my mind immediately: Marko Marin The player who was known as the "German Messi". At one point he was actually a NT player ahead of Marco Reus and was selected for the 2010 WC squad. He reached his career peak during his Werder Bremen days. But ended up transferring to Chelsea and that's where everything went wrong. Never getting a proper chance at Stamford Bridge, Marin went on a downward trending spiral of loan moves to Sevilla, Fiorentina, Anderlecht, and Trabzonspor. Before finally landing at Olympiacos. Still only at age 28, his best days are well behind him. Serdar Tasci I don't think he's had a bad career. But just like Marin earlier, Tasci was also brought into the German NT really early in his career and played (briefly) in WC 2010. Former captain of Stuttgart, he then made the move to Spartak Moscow in the Russian League and has basically not been heard of ever since. He did get brought in by Bayern a couple seasons ago when they needed an emergency CB for the squad. And I guess if anything, his club won the Russian league title last season. But otherwise after moving to Russia, he become irrelevant for Jogi and has not featured for the NT again. Holger Badstuber The big man is still playing professionally in the Bundesliga, but multiple major injuries have severely hindered him from reaching his full potential. At one point, I believe he was ahead of Boateng and Hummels even in terms of original expectations. Julian Schieber The Schiebs was actually a reasonably promising striker talent with Stuttgart many years ago. But he went to Dortmund and barely played for many years sitting on the bench for the most part. Had a chance when he first moved to Hertha, but got injured multiple times. Still 28 right now, but I don't think there's a way back for him.