The Seahawks made changes to their strength and conditioning program for the 2019 season, hiring Ivan Lewis as the team's head strength and conditioning coach. Joining Lewis on the strength and conditioning staff are strength and conditioning assistants Jamie Yanchar, Mark Philipp, Thomas Garcia and Grant Steen.

The team also promoted David Stricklin to head athletic trainer, replacing Donald Rich. Stricklin has been with the Seahawks since 2010 as an assistant athletic trainer, and before that was an athletic trainer at Oregon State.

The Seahawks also added two assistants on offense, offensive assistant Austin Davis and assistant wide receivers coach Brad Idzik. Steve Shimko, who joined the Seahawks last year as an offensive assistant, will take on the title of assistant quarterbacks coach in 2019.

This will be Lewis' second time working with head coach Pete Carroll, having previously served as an assistant strength and conditioning coach at USC from 2006-2008 under Chris Carlisle, who was Seattle's head strength conditioning coach from 2010-2018.

Lewis, 40, spent the last five seasons as USC's head strength and conditioning coach. Before that he held that same position at the University of Washington from 2009-2013, and in 2013 he was named the Samson Equipment/American Football Monthly FBS Strength and Conditioning Coach of the Year.

Lewis previously spent time on the strength staff of the San Diego Chargers in 2004 and 2005, and before that spent two years at the University of San Diego where he earned his master's degree in leadership studies. Lewis, who is a Certified Strength and Conditioning Specialist (CSCS) and is certified by USA Weightlifting, was also an assistant football coach and strength and conditioning coach at Mount Si High School in Snoqualmie.

Joining Lewis from USC is Philipp, who was an assistant strength and conditioning coach at USC last year, and before that was Nebraska's head football strength coach from 2015 to 2017 under head coach Mike Riley. Philipp also worked with Riley as an assistant strength and conditioning coach at Oregon State from 2009-2013. Philipp moved to USC in 2013 where he served as an assistant strength and conditioning coach.

Steen, a former standout linebacker at the University of Iowa, also worked with Lewis at USC, and has also spent time at the University of Washington, Stanford University and the University of Minnesota.

Yanchar, who served as a strength and conditioning assistant under Carlisle, will return for the 2019 season in that same role. Garcia previously was a member of the Seahawks' sport science department since 2013.

Davis, who served as Russell Wilson's backup in 2017, returns to Seattle to begin his coaching career. The 29-year-old Davis will work under offensive coordinator Brian Schottenheimer, who was Davis' coordinator during his most successful year as a player, the 2014 season in which he started eight games for the St. Louis Rams, throwing 12 touchdowns and nine interceptions while completing 63.4 percent of his passes. Davis spent the 2018 season with the Tennessee Titans, and was released earlier this month.