The San Francisco 49ers continue to build their roster even after the 2025 NFL Draft, focusing on undrafted free agents (UDFAs) who bring potential value to the team. Under Kyle Shanahan's leadership, the Niners have successfully integrated undrafted players into their lineup, and this year presents a crucial opportunity given the team's existing gaps. The draft class includes notable picks like DE Mykel Williams from Georgia and LB Nick Martin from Oklahoma State, but the UDFAs will be crucial for addressing remaining needs across multiple positions.

The 49ers are notably looking to bolster their offensive tackle, defensive end, center, tight end, and quarterback positions. With a mixture of established and rookie talent on the roster, UDFAs could find a pathway to impactful roles, particularly in a competitive NFC West division. As the team tracks the signings and integrates these new players, fantasy managers should keep an eye on potential breakout candidates emerging from this group.