2008-09: Seth Jones was chosen in the first round, 11th overall, of the 2009 WHL Bantam Draft by the Everett Silvertips.
2009-10: Jones played for the Dallas Stars U-18 AAA Major Midget team. In 42 games, Jones scored 3 goals and added 15 assists for 18 points.
2010-11: Jones joined the U.S. National Team Development (NTDP) program, splitting time between the USHL squad, U-17, and U-18 teams. In the USHL, Jones played in 28 games, scoring 1 goal and adding 13 assists for 14 points. For the U-17 squad, he tallied 4 goals and 17 assists for 21 points in 37 games. For the U-18 team, he picked up 10 assists in 20 games. Jones also represented the U.S. in a couple of tournaments. At the 2011 World Junior Challenge U-17 Tournament, Jones scored 1 goal and added 1 assist for 2 points in 5 games. At the 2011 U-18 World Junior Championship, he tallied 3 assists in 6 games for the gold medal squad.
2011-12: Jones continued his play for the NTDP, splitting time between the USHL team and the U-18 squad. Jones, who captained the USHL team, scored 4 goals and added 8 assists for 12 points in 20 games. For the U-18 squad, he scored 8 goals and added 23 assists for 31 points in 52 games. Jones captained the USA's entry at the 2012 U-18 World Junior Championship, scoring 3 goals and adding 5 assists for 8 points in 6 games for the gold medal squad. The Portland Winterhawks acquired the rights to Jones from the Silvertips.
2012-13: Originally committed to playing college hockey at North Dakota, Jones decided to play in the Western Hockey League and joined the Portland Winterhawks (who had obtained his rights from Everett). In 61 games for Portland he scored 14 goals with 42 assists and was plus-46 with 33 penalty minutes. The Winterhawks had the WHL's best record, winning 57 of 72 games. In Portland's first ten playoff games he scored 2 goals with 6 assists and was plus-eight. Jones was an assistant captain for the USA squad at the 2013 U20 World Junior Championship as an 18-year-old and in six games for the gold medal winners was plus-eight with 1 goal and 6 assists. Jones was the top ranked North American skater in Central Skating's mid-season rankings prior to the 2013 NHL Draft, and remained the top-ranked North American in the CSS final rankings.
Pro-sized defensemen. Very good range and lateral movement. Deceptively fast due to long, effortless stride. Intelligent puck mover.