Although offseason expectations are the highest they’ve been for Missouri in years, Brady Cook still believes the Tigers have something to prove. Mizzou comes in at No. 6 overall in the preseason SEC poll after being picked sixth in just the SEC East Division in 2023. The excitement is the product of an 11-2 finish this past season, the Tigers’ best record in almost a decade, and Cotton Bowl win against Ohio State. They return a number of key players from that run, including Cook, who will be back for his fifth season in Columbia and his third as a starter. But while last season’s success is t…