Yeah, I think Sprott has crossed the line between contender (at a certain level) and journeyman. Not sure a fighter of his ability ought to be retiring with nearly a 50-50 record. Some of these fights that he's lost he ought to have trained harder for and won, such as against Ustinov.
Not cool for any type of 12 round fight. It looks like he has his eyes on the Klitschko training camp. Perhaps it's time for Sprott to fight the 'promising' Brits...Tom Dallas? Adios.