2008-09: Split the season betweeen the Skovde IK's Division 1, J-20 and J-18 squads. In 24 games for the Division 1 team, Friberg scored 1 goal and added 3 assists for 4 points. In 17 games for the J-20 team, Friberg scored 13 goals and added 7 assists for 20 points. In 10 games for the J-18 squad, Friberg scored 14 goals and added 18 assists for 32 points.
2009-10: Friberg spent most of the season with Skovde IK's Division 1 club. In 36 games, he scored 12 goals and added 18 assists for 30 points. Friberg also played for Sweden's silver medal squad at the 2010 U-18 World Junior Championship, scoring 2 goals and adding 3 assists for 5 points in 6 games.
2010-11: Played for Skovde IK at the Division 1 level, appearing in 34 games for that team. Friberg netted 13 goals and added 27 assists for 40 points. Friberg also played for Sweden at the 2011 U-20 World Junior Championship, scoring 2 goals in 6 games.
2011-12: Friberg played in 48 games for Timra in Sweden's Elitserien as a rookie and was the leading goal scorer at the 2012 U20 World Junior Championship while playing for gold medal-winning Sweden. Skating for a Timra team that finished last in the 12-team Elitserien, he scored 5 goals with 5 assists and was minus-three with 8 penalty minutes. Timra avoided relegation to AllSvenskan, finishing first in the six-team Kval series. Friberg was the fourth-leading scorer for Timra in the Kval series, scoring 3 goals with 4 assists and finishing minus-one in 10 games. Friberg scored a tournament-best 9 goals with 2 assists and was plus-four with 22 penalty minutes in six games at the WJC. Sweden defeated Russia in the gold medal game. Friberg signed a three-year entry-level contract with Anaheim in June 2012.
Friberg has established himself as an early candidate for the biggest steal in the 2011 draft as the 143rd overall pick shined at the World Juniors. He led Sweden in scoring en route to the gold medal and showed a good deal of physical maturity as well. He has explosive offensive potential but does not shy away from the physical game or neglect his responsibilities on defense.
Though he was the last of three Swedes selected by Anaheim, Friberg may be the most promising and the quickest to arrive in the NHL. He projects as a top-six forward with excellent ability to change speeds, relentlessness on the fore-check, sufficient strength and a very well-rounded game.