In fantasy football, quarterbacks with underrated rushing ability can transform lineups, and 2025 looks promising for several sleeper QBs. J.J. McCarthy of the Minnesota Vikings, while yet to play in the NFL, showcases untapped rushing potential, primarily because he was surrounded by a strong running game and offensive line in college. If coach Kevin O'Connell allows him to run, McCarthy could easily exceed 50 rushing yards per game, translating to significant fantasy points.

Drake Maye, now with the New England Patriots, already averages nearly eight yards per carry. His rushing prowess, despite limited designed runs, ranks him among the top QBs in expected points added when scrambling. As the Patriots continue to adapt their offense, expect Maye to take on more rushing responsibilities, potentially elevating his draft stock and fantasy upside.

Lastly, Brock Purdy of the San Francisco 49ers has improved his rushing metrics significantly, suggesting he may be featured more as a runner in 2025. Given the aging and injury-prone stars around him, Purdy might need to rely more on his legs, making him a sleeper pick for fantasy leagues. Overall, keep an eye on these quarterbacks as potential league-winners due to their rushing capabilities.