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SANTA CLARA Earl Mitchell Jersey White , Calif. (AP) — The San Francisco 49ers have added former NFL receivers Wes Welker and Miles Austin as assistant coaches.The 49ers announced several staff moves Wednesday highlighted by Welker’s addition as receivers coach and Austin’s as an offensive quality control coach.Welker had 903 catches in 12 seasons in the NFL and spent the past two years as an assistant for Houston. Austin had 362 receptions in 10 seasons and has been a scouting intern in Dallas since his retirement.The 49ers also hired Shane Day as quarterbacks coach, Zach Yenser as assistant offensive line coach, Bobby Slowik as an offensive assistant and Brian Fleury as defensive quality control coach. San Francisco also promoted Daniel Bullocks from assistant defensive backs coach to safeties coach.The team also hired Ben Peterson as the head of player health and performance, Dustin Perry as strength and conditioning coach, and Shea Thompson Womens Jaquiski Tartt Jersey , Aaron Hill and Mike Nicolini as assistant strength coaches. Baker Mayfield has three turnovers. Matt Breida has 103 yards from scrimmage and two touchdowns.The 49ers lead 21-3 at halftime, and the Browns are fortunate it’s not worse.San Francisco has scored only seven points off Mayfield’s two interceptions and one fumble.The 49ers punted after Richard Sherman‘s pick of Mayfield set them up at the Cleveland 41. And Robbie Gould missed a 47-yard field goal wide right following a DeForest Buckner strip-sack that Nick Bosa recovered at the Cleveland 29.K'Waun Williams‘ pick of Mayfield was a killer, though.The Browns were threatening to close within 14-10 with 4:45 remaining in the first half when Mayfield tried to hit Antonio Callaway in the end zone. Williams returned the interception 49 yards, and the 49ers converted with a touchdown drive as Tevin Coleman scored on a 19-yard run.Gould has missed two field goals, with the new snapper and rookie holder not doing him any favors. Gould missed only three of 75 field goals in his first two seasons with San Francisco but has missed four already this season.Mayfield is 7-of-16 for 80 yards and two interceptions Richard Sherman Jersey , with a fumble and an intentional grounding penalty. Odell Beckham has completed a pass to Jarvis Landry for 20 yards, has two runs for 11 yards and has caught one pass for 7 yards, though he also has two drops. Bosa has dominated with three tackles, a sack, four quarterback hits Adrian Colbert Jersey White , two tackles for loss and a fumble recovery. He celebrated the final play of the half — intentional grounding on Mayfield — by pretending to plant a flag in the turf.Mayfield, of course, famously (or infamously) planted an Oklahoma flag after beating Ohio State on the road in 2017.Jimmy Garoppolo has thrown for only 46 yards, but the 49ers haven’t needed him with 185 rushing yards.Breida scored on an 83-yard run on the team’s first play from scrimmage. He has three carries for 88 yards and a touchdown and has caught three passes for 15 yards and a score.Coleman has seven carries for 54 yards and a score.