7. MVP
MVP was originally given a lot of hype, including a contract signing billed as the biggest contract signing in SmackDown history. He was almost instantly put into a feud with Kane, which included an Inferno match loss, before defeating Chris Benoit for the U.S. Championship. He would go on to hold the US title for 343 days, a record that wouldnt be broken until Dean Ambroses reign in 2014. For some reason, after losing the belt, MVP began a 5-month losing streak that severely damaged his credibility. It took him being in a match that involved Triple Hs Royal Rumble entry for his losing streak to be broken, but by that point MVP had really lost a lot of momentum. Though he did stay in the mid-card title picture throughout 2009 and 2010, by that point he was basically a midcarder for life. He had nothing that couldve elevated him to the upper mid-card or the main event, especially after becoming a jobber immediately after losing the U.S. Champion. He shouldve immediately started hanging around the top stars to truly establish himself as a major star, but WWE decided instead to have him lose a lot, without must justification. MVP was a good worker who became a victim of bad booking circumstance. If he had been booked properly, he couldve been a main-event player, at the very least.