After a tumultuous 2025 MLB season for Ryan Walker, the 30-year-old relief pitcher is looking to reclaim his role as the Giants’ undisputed closer. Former Giants closer Sergio Romo explained in an interview with KNBR’s “Papa & Silver” why he expects that Walker will successfully stake his claim. “I’m excited to just keep reaffirming that his conviction is real and it plays,” Romo said. “And his ability; he can do what I did 10 miles harder, 10 miles faster with the breaking ball and the sinker. It’s impressive, right? And it’s hard to control that.” Walker’s confidence and ability early in his MLB career is what earned him the closer role in an impressive 2024 campaign. He finished that season with a 1.91 ERA along with 10 saves. The beginning of 2025 went differently. He struggled with command and posted a 4.95 ERA into late May, forcing then-manager Bob Melvin to turn back to Camilo Doval. “The whole league, whenever he stepped out on the mound, was...