NFL news roundup: Broncos signing safety Taylor Rapp; Commanders DT to miss 'significant' time

Key Points:

• Safety Taylor Rapp has signed with the Denver Broncos after spending the last three seasons with the Buffalo Bills; he was released by Buffalo in March following knee surgery last season.
• The Detroit Lions are managing injuries to TE Sam LaPorta (hip) and G Ben Bartch (concussion protocol), with LaPorta expected to be fine long-term; QB Jared Goff will not play in their upcoming preseason game.
• Kansas City Chiefs will start QB Justin Fields in their preseason game against Tampa Bay, while Patrick Mahomes and some offensive linemen will sit out; WR Jeff Caldwell and DE Ashton Gillotte are dealing with knee and foot injuries respectively.
• Washington Commanders face significant injury setbacks as DT Jer'Zhan Newton underwent surgery for a torn pec and will miss a considerable amount of time; RB Rachaad White and C Nick Allegretti are also sidelined for the upcoming preseason game.
• Several teams are adjusting their preseason lineups due to injuries and strategic decisions, with notable roster moves including the signing of OT Kellen Diesch and the waiving of OT Matt Waletzko with an injury designation.