2009-10: Daniel Zaar played in four men's games with Jonstorps in Division II as a 15-year-old and was the leading scorer for the Jonstorps IF U18 team. He played for Skane in the TV-Pucken tournament for high-school age players. Zaar was with the men's team during the Kval playoffs and had 1 goal with 1 assist. In four games with Jonstorps U20 team he scored 3 goals with 3 assists and had 4 penalty minutes. Zaar spent the bulk of the season with the U18 team and in 17 games scored 12 goals with 11 assists and had 10 penalty minutes. He scored 3 goals with 4 assists in seven games during the TV-Pucken tournament as Skane reached the championship game against Stockholm 1.
2010-11: Zaar moved up to the top division in Sweden – joining his older brother Jonathan with the Rogle BK club in Angelholm. Daniel Zaar split the season between the U20 and U18 squads. In 29 games with Rogle U20, including three playoff games, he scored 3 goals with 3 assists and was plus-three with 14 penalty minutes. After finishing fourth, Rogle BK lost to eventual champion Frolunda in the playoff quarterfinals. In 23 games with Rogle BK U18, Zaar scored 16 goals with 18 assists and had 4 penalty minutes. In four playoff games he had 4 assists and 4 penalty minutes.
2011-12: Zaar was one of the top scorers for Rogle BK's U20 team and played a key role in the U18 team's run to a playoff championship. In 44 regular season games with Rogle BK U20 he scored 14 goals with 24 assists and was plus-six with 28 penalty minutes. After finishing first in the South Division and eighth among the Top 10 teams, Rogle BK won a bronze medal in the SuperElit U20 playoffs. In seven playoff games Zaar scored 5 goals with 3 assists and was minus-one with 8 penalty minutes. He scored 6 goals with 6 assists and was plus-five in seven regular season games with Rogle BK U18. In the U18 playoffs he scored 5 goals with 4 assists and was plus-seven as Rogle BK captured the U18 gold medal. Zaar was ranked 114th amongst European skaters in Central Scouting's final rankings prior to the 2012 NHL Draft and was selected by Columbus in the sixth round (152nd overall).
2012-13: Zaar played in Sweden's Elitserien as an 18-year-old, skating in 25 games for Rogle, and also played for Karlskoga in Sweden's second league (AllSvenskan). He also saw action with Rogle's U20 team. Zaar scored goals in his second and third games for Rogle but had just one assist in his last 22 games. He averaged six minutes of ice time and was -4 with the last-place club. Zaar returned to Rogle for the Kval series playoffs, skating in seven games, and was -3 with 1 goal and 2 penalty minutes. In 21 games with Karlskroga, including six playoff games, he scored 2 goals with 8 assists and was +6 with 4 penalty minutes. Zaar scored 11 goals with 8 assists in 17 regular season games for Rogle's U20 team. He had no points with 2 penalty minutes and was -1 in his only playoff game.
Zaar is an extremely well rounded player. His solid work ethic allows him to hold his own in the defensive zone. He relies on his quick release to beat goalies with a deadly wrist shot and can set up goals just as well as he puts them home. While physicality is not his focal point, Zaar utilizes his speed to be a playmaking winger. With great vision and a timely shot, Zaar could be seen as a steal in the sixth round as he could develop into a top nine forward.
Zaar signed a one-year extension with Rogle, which will be competing in the Allsvenskan league. Along with fellow Blue Jackets’ prospects Oscar Dansk and Alexander Wennberg, Zaar attended Sweden’s WJC camp. If he makes Sweden’s final roster, he would compete for the host country of this year’s WJC.