Newby redshirted his first season at Nebraska.
Before Nebraska (Quince Orchard)
Marcus Newby is a key part of an impressive group of linebackers in Nebraska's 2013 signing class, joining Josh Banderas and Courtney Love. Newby comes to Nebraska after being a dominant defensive presence for Coach Dave Mencarini at Quince Orchard (Md.) High School the past three seasons. Newby is the first NU signee from Maryland since fellow Quince Orchard product Jason Ankrah joined the NU program in the 2009 class. Overall, Newby is just the third Maryland product to sign with the Huskers since 1990. As a senior, the 6-1, 210-pound Newby recorded a team-high 132 tackles, while adding more than 15 tackles for loss, seven pass breakups, an interception, two forced fumbles and a pair of blocked kicks. Newby's play helped Quince Orchard to a 12-2 record and a second consecutive Class 4A state runner-up finish. For his work in 2012, Newby earned consensus all-state honors in Maryland for the second straight year. He was also a Washington Post All-Met first-team choice, and a Montgomery Gazette first-team pick. Newby was also a difference-maker for the Quince Orchard defense during a 13-1 campign in 2011. Newby racked up 107 tackles, 17 tackles for loss and three sacks as a junior, while also adding eight pass breakups and two fumble recoveries. In addition to being a first-team all-state choice in 2011, Newby was also named to the all-tournament team for his impressive play during the state playoffs. Newby broke into the varsity starting lineup as a sophomore in 2010 and earned first-team all-county honors after helping his team to a 9-3 record. Newby was selected to play in the Semper Fi All-American Bowl in Arizona in January. He is regarded as one of the top 150 overall prospects in the country by 247 Sports, which also ranks Newby among the top 10 players in Maryland and the top dozen outside linebackers in the country. Rivals.com also ranks Newby among the top 20 outside linebackers in the nation and the top 10 players in Maryland. Newby had offers from dozens of schools, including Oklahoma, Penn State, South Carolina, Virginia Tech, Arizona and Maryland.
Newby is the son of Mary Lourdes and Kenneth Newby, and he was born on July 7, 1994.