2004-05: Made major junior debut with the Erie Otters of the OHL.
2005-06: Started the season with the Otters, but was traded to the Oshawa Generals.
2006-07: Continued his OHL career with the Generals and centered a line with John Tavares. Was second in team scoring. He was second in goal scoring (47), third in assists (53) and tied for second in power-play goals (19). Ranked ninth overall in league scoring. Participated in the the 2007 CHL Top Prospects Game. Named to the OHL Eastern Conference All-Star Team.
2007-08: Started the season for the Generals hot and kept up that consistency all season long. The sniper finished the regular season with 119 points (61 goals, 58 assists), which led Oshawa and was good for second overall in the OHL in scoring. In addition to those feats, his 61 goals led the OHL. MacLean also had the longest point streak all season in the OHL, scoring 78 points in 32 games from Nov.1 to Jan. 25. During that stretch, he was named the OHL player of the week for Nov. 5, as well as the CHL Player of the Week for Nov.7. Caught the flu towards the end of the regular season, but bounced back for the playoffs. Managed to add 15 points (5 goals, 10 assists) in 13 playoffs games.
2008-09: Brett Maclean made his pro debut with the San Antonio Rampage (AHL). In 74 games with San Antonio, Maclean scored 21 goals and picked up 19 assists. Maclean was also a positive player, finishing with a +5 rating. Maclean signed an entry-level deal with the Phoenix Coyotes (NHL) prior to the season.
2009-10: Maclean established himself as one of the best goal scorers in the AHL in his second season with the San Antonio Rampage(AHL). He finished in the top 20 in points, scoring 30 goals and notching 35 assists. Maclean maintained his positive rating, finishing with a +13 rating.
2010-11: Finally recalled to the Coyotes after two season dominating the AHL, MacLean duly scored his first two NHL goals during a 13 game stint in Phoenix. On a point per game pace in San Antonio, MacLean was coming off a 30 goal season for the Rampage and has been knocking on the door for an NHL spot for some time.
2011-12: MacLean appeared in five NHL games with Winnipeg in October, after being claimed by the Jets on waivers from the Coyotes. He was subsequently waived by the Jets and re-claimed by the Coyotes; spending the rest of the season with Phoenix AHL affiliate Portland. MacLean was the leading goal scorer for the Pirates, scoring 25 goals in 63 games and was minus-three with 23 assists and 45 penalty minutes. Portland finished third in the Atlantic Division; missing the playoffs by two points. He signed a one-year contract with the Coyotes but suffered a cardiac emergency while playing hockey in July 2012 and retired from hockey in October.
A natural goal scorer with soft hands and a quick release, MacLean possesses the offensive skills that make him a dangerous weapon in the offensive zone. Has been a high-scorer in the AHL, but his skating is holding him back from making the jump full-time.
After a life-threatening cardiac emergency in the off-season, MacLean’swas forced to retire from hockey.