49ers to start rookie safety Marques Sigle in Week 1 vs. Seahawks, per source

The 49ers will start a rookie at safety in Week 1 of the regular season for the first time in 12 years.Marques Sigle, a fifth-round 2025 NFL Draft pick, will be in the starting lineup Sunday afternoon in the 49ers’ season opener against the Seattle Seahawks, a source told NBC Sports Bay Area.Sigle had a strong training camp and preseason to win the starting role in defensive coordinator Robert Saleh’s defense over third-year player Ji’Ayir Brown. Sigle will start alongside veteran safety Jason Pinnock, the source said. Pinnock started 32 games over the past two seasons with the New York Giants. Pinnock, a fifth-year pro, signed a one-year, $2.2 million contract with the 49ers in the offseason.Coach Kyle Shanahan declined to identify his starting safeties during the week, citing a possible competitive advantage in not revealing that information.As the 49ers prepared to face the Seahawks in the opener, Sigle said he was not sure whether he would be in the starting lineup to open the season.“Whatever comes that day, that’s out of my control,” Sigle said. “What is in my control is going out there each and every day and not making...