Drew Lock must carry development through summer for Mizzou to succeed

Missouri’s season is in Drew Lock’s hands for the next few months.

As important as spring practice was and fall camp will be, it’s the time and energy Lock puts into mastering the Tigers’ offense during the summer months — skills that must honed without the benefit of coaching from Mizzou’s staff — that will dictate how big of a jump he makes in 2017.

“Guys have to understand that they have to put in time on their own if they want to get themselves to be a high-performing player in the Southeastern Conference,” Mississippi State coach Dan Mullen said. “If you’re going to play quarterback in our league, you’ve got to put in the extra time, not just technique but film study and understanding…