When it was revealed that Jimmy Graham had been traded to the Seattle Seahawks on Tuesday, the NFL world went into complete shock.
This was genuinely one of the biggest trades we've seen in a while and it came completely out of the blue. There had been no rumours, no leaks, or no 'sources believing' anything. It just happened, and it blew up Twitter in that 15 minute period on the 1st day where signings could be made and everything happened.
But the trade that shocked the world could now be in jeopardy, and it's all down to the man that the Seahawks sent to New Orleans, Max Unger.
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Unger spent a lot of time last season injured and only played in six games for a Seahawks side that was just one play away from retaining the Super Bowl. Unger suffered knee and ankle injuries last year that saw him miss the crunch part of the season.
And it is Unger who is currently holding up the deal being completed right now. The 28-year old center has still yet to complete his medical with the Saints with being in Hawaii and according to a report from ProFootballTalk, Unger getting through that physical isn't a "slam dunk proposition."
Staying with the NFL, DeMarco Murray may have given the clearest hint yet about his future. The Cowboys running back is heading to Philly for a visit with the Eagles, where he would link up with his college teammate Sam Bradford if he signed for the Eagles.
Over to the NBA now, where the Oklahoma City Thunder have laughed off rumours about a possible Kevin Durant trade. GM Sam Presti called the trade talk "ludicrous" after an ESPN analyst suggested that the Thunder wouldn't want to lose KD for nothing in free agency.
And finally to Baseball, where Yu Darvish looks likely to miss the entire 2015 season before it's even started. According to reports, a second doctor has agreed that the Texas Rangers pitcher needs Tommy John surgery on an elbow injury.