The San Francisco 49ers' strategic moves in free agency have sparked debate and analysis, with ESPN's Seth Walder offering his grades. The Odighizuwa trade, a B, is seen as a win for the 49ers, despite the Dallas Cowboys' seemingly poor trade decision. Odighizuwa's potential to disrupt the interior of the defense and support Nick Bosa is a key factor, and his non-guaranteed contract provides flexibility. The Evans signing, an A-minus, is a calculated risk, especially with the team's cap situation and the potential for a bounce-back season. These moves demonstrate the 49ers' ability to address needs without compromising their financial stability or draft prospects, making them a force to be reckoned with in the NFL.