The San Francisco 49ers are hiring Ben Peterson away from the Philadelphia Flyers of the NHL to oversee their medical and training staffs 2019 Kaden Smith Jersey , according to Matt Barrows of the .A specific title for Peterson’s role is not stated but his title with the Flyers had been Director of Sports Science and Performance.The 49ers fired their strength and conditioning staff last month. Peterson’s addition is part of their restructuring of the department after numerous injuries setback the team in each of the last two seasons.“It’s been too big of a deal for two years,” Shanahan said of the injuries at the end of the season. “Injuries are pretty random, but it’s also affected us huge. So that’s something that we definitely have to sit back and really look at it from all angles and put a lot of time into. Just try to find a better perspective at it.”Peterson’s LinkedIn page describes himself as having “a proven track record of developing effective performance teams; integrating strength and conditioning Kaden Smith San Francisco 49ers Jersey , sports medicine, physical therapy, and nutrition. Skilled in communicating data driven insights to stakeholders in different departments to take decisive action and improve team performance. Extensive background in sport performance technology (hardware and software) Cheap Deebo Samuel Jersey , analytics, and exercise physiology.” Safety Eddie Jackson‘s been a big part of the Bears’ defensive success this season, but it looks like they will have to go without him against the 49ers on Sunday.Jackson injured his ankle in the team’s NFC North-clinching win over the Packers last weekend and was out of practice all week as a result. That didn’t create much hope that he’d be in the lineup this weekend and the team has listed him as doubtful to play this weekend.While the injury news about Jackson isn’t great Deebo Samuel San Francisco 49ers Jersey , there was a positive development for guard Kyle Long. Long practiced for the first time since going on injured reserve with a foot injury in early November. That sets Long up to be activated in time for the postseason if all goes well.Linebacker Aaron Lynch is also listed as doubtful for Sunday due to an elbow injury. Defensive tackle Bilal Nichols‘ knee injury led to a questionable tag.