Alexander was recruited to Oregon State and grayshirted his freshman year to focus on academics. He ended up becoming a three-year starter for the Beavers. He was frequently injured as a junior and underwent a neck surgery after the season. Alexander enjoyed a bounce-back senior year, recording 70 tackles with 12 tackles for loss and four sacks in 2014[2]
Professional career
Kansas City Chiefs
Alexander was selected in the fifth round with the 172nd pick of the 2015 NFL draft by the Kansas City Chiefs despite not being invited to the NFL combine.[3] A good showing at Oregon State pro day prompted the Chiefs to select him.[2]
As a rookie in 2015, Alexander played all 16 games making 16 tackles and a forced fumble.
Having little expectations at regular snaps, Alexander performed better at special teams. He finished the 2016 season by playing 16 games with one start. He was named to his first Pro Bowl as a special teamer.[4]