05/02/15: Drafted by Detroit (6th round, 200th overall)12/06/16: Placed on injured reserve (pectoral)10/23/19: Traded to Seattle
A four-year cornerback at Texas who played in 52 career games (49 starts) and ended his career tied for ninth on the Texas all-time list for interceptions (11), while his 37 career passes defensed are also tied for ninth in school history. Earned All-Big 12 honors three times (2011, 2013, 2014) and started 48 of his final 49 games. Did not miss a game in his Texas career. Earned 2014 first-team All-Big 12 honors from ESPN and was a second team pick by the Associated Press and the league's coaches. Was invited to the 2015 Senior Bowl following his final season at Texas where he finished with a career-high 73 total tackles (52 solo), two sacks, three interceptions, five passes defensed and one forced fumble in 13 games (13 starts).
Attended Angleton High where he was a two-time all-state and four-time all-district selection at multiple positions. Was a four-year starter at Angleton and finished his career with 8,265 all-purpose yards and 83 touchdowns on offense, rushing for 4,409 yards and 58 touchdowns, passing for 1,938 yards and 11 touchdowns and catching 10 passes for 301 yards and three touchdowns. On defense, totaled 237 tackles, 19 tackles for loss, six sacks, 10 interceptions, 52 pass breakups, 11 forced fumbles, four fumble recoveries, seven blocked kicks and returned four interceptions for scores. Brother, Quentin Jammer, was a three-year starter and All-American defensive back at Texas (1997-98, 2000-01) and played for the Denver Broncos in 2013 after 11 seasons with the San Diego Chargers (2002-12). Also lettered three years in track and was a two-year letterman in basketball. Earned a bachelor's degree in physical culture and sports with a minor in social work from Texas, and was a member of the Big 12 Commissioner's Honor Roll in 2013.