The 2025 dynasty fantasy football season is heating up, and savvy gamers are turning their attention to undervalued players in start-up drafts. With key sleepers often overlooked, identifying potential breakout candidates can significantly boost your roster. Players like Jordan Mason, now with the Minnesota Vikings, have the potential to become crucial assets in deep leagues. After a solid performance with the San Francisco 49ers, Mason's new role could see him sharing the backfield with Aaron Jones, making him a valuable flex option.

Tank Bigsby is another player to watch. After a disappointing rookie season, he rebounded in 2024, showcasing his skills as Jacksonville's most productive back and outperforming Travis Etienne. With a new coaching regime in place, Bigsby might secure a larger role, especially if he continues his upward trend. Lastly, Chig Okonkwo, a tight end for the Tennessee Titans, appears to be on the verge of a breakout after showing promise late last season. As the dynasty draft approaches, these players are worth considering for your fantasy roster.