2006-07: Blake Kessel scored 11 goals, 27 assists for 38 points and 38 penalty minutes in 59 games played with the Waterloo Blackhawks.
2007-08: As a member of the Waterloo Black Hawks (USHL), Kessel recorded 57 points (19+39) in 59 games. His 19 goals were good enough for second on the team and first among defensemen, while his 39 assists led the team in the category. He continued producing in the playoffs, scoring 11 points in 11 postseason contests, all while adding 10 more assists. Kessel signed a Letter of Intent to attend the University of New Hampshire (Hockey East) in the fall of 2008.
2008-09: Played with New Hampshire in his first college season, potting six goals and seven assists. Also played with Team USA at the World Juniors, where he would add one assist.
2009-10: Kessel, the younger brother of Toronto forward Phil Kessel, came into his own offensively as a sophomore at the University of New Hampshire. Kessel scored 3 of his 10 goals on the power play and was the Wildcats' team leader with 28 assists. He skated in 38 of 39 games as New Hampshire finished first in Hockey East and reached the NCAA East Regional Final. Kessel was +11 with 28 PMs. He was named to Hockey East's First All-Star team and the NCAA East Second All-American Team.
2010-11: Kessel was the top offensive defenseman for New Hampshire as a junior and announced following the season that he would forego his final year of college eligibility. In 39 games with New Hampshire Kessel scored 5 goals with 22 assists and was +6 with 32 PMs. After finishing third in Hockey East the Wildcats lost to Merrimack in the conference semifinals and fell to Notre Dame in the finals of the NCAA Northeast Regional. Kessel was named to the NCAA East First All-American Team. The Islanders chose not to sign Kessel in June 2011(making him an unrestricted free agent) and in September he signed an entry-level contract with the Flyers.
2011-12: Kessel played 56 games for Flyers AHL affiliate Adirondack in his first pro season. Struggling to make the adjustment from college to pro hockey early on, he showed improvement as the season progressed, particularly when the Flyers made several call ups and Kessel's role increased. He scored 1 goal with 17 assists and was minus-one with 10 penalty minutes. The Phantoms finished fifth in the Northeast Division; missing the AHL playoffs.
Kessel likes to join the offensive rush with his speed and skill and can act as a fourth forward on the ice.