Cann had a college soccer career at the University of Louisville from 2000 to 2003.[1] Cann immediately earned a place in the Cardinals' starting lineup as a freshman, starting 20 games for the team, and was named to first-team All-Conference USA. Cann would maintain this level of performance, being named first-team All-C USA as a sophomore, junior, and senior, and being named the conference's Co-Defensive Player of the Year as a junior and senior. In his final year he played 15 games for them.[2]
Cann is a member of the University of Louisville Athletics Hall of Fame.[3]
Upon graduating, Cann was selected 16th overall in the 2004 MLS SuperDraft by Colorado Rapids.[6] Cann played little for the team, however, and was released midseason because of roster restrictions limiting a team's international players. Cann then signed late in the season with Montreal Impact, but saw little playing time for the team, playing only 256 minutes over 7 games.[7] He stayed with the Impact for the 2005 season and made 15 more appearances for them.[8] Throughout his tenure with Montreal, he helped the club win the league championship in 2004 and the regular-season title in 2005.[7]
In 2006, Cann signed with league rivals Vancouver Whitecaps.[9] In his debut season, he assisted the club in winning their first USL First DivisionChampionship by beating the Rochester Raging Rhinos 3–0.[10] Vancouver would re-sign Cann the following season.[11] After the conclusion of the season, he was named the club's Most Outstanding Defender.[12] He would return to Vancouver for his third and final season in 2008.[12] In his final tenure with Vancouver he was appointed the team captain.[13] Midway through the season, he was transferred to Esbjerg fB in Denmark's premier league.[14]
Europe
On June 29, 2008, he signed a four-year deal with Danish football side Esbjerg fB.[15] He was released from his contract in early 2010.
Cann signed with Toronto FC on April 12, 2010, after ongoing trials with the team.[17] He made his debut for the club against Philadelphia Union on April 15, 2010. Since joining fellow international Nana Attakora in the centre of defence the Canadian partnership has become one of the strongest in the league. On September 21, 2010, Cann had a stand-out performance which saw him win Man of the Match against highly rated Mexican side Cruz Azul in the 2010 CONCACAF Champions League Group Stage, the game finished as a 0–0 away draw. This game was also the first time in which Adrian had the honour of wearing the captain's armband for Toronto since Dwayne De Rosario was on the bench. On November 18, Adrian was awarded the team's most valuable player of the 2010 season, taking the honour from captain Dwayne De Rosario who won the award in the 2009 season.[18]
Following pre-season camp in Turkey and Orlando, it was announced by the club on March 2, 2011, that Cann had not traveled with the team to Charleston, South Carolina for the Carolina Challenge Cup. This following Cann's rejection of a new contract offer in which he wanted to continue to negotiate, all deals were removed from the table leading Cann to retire or wait for Toronto to cancel the remaining years on his current contract.[19] However, eight days later the club announced that Cann had rejoined the team in Charleston just over a week before the first regular season game.[20] After a strong early 2011 season from Cann, on May 31 he tore his ACL during a practice on a turf field with the team. Coach Aron Winter confirmed that he would miss the remainder of the 2011 league season.[21]
Cann made his return from injury on April 14, 2012, against Chivas USA, the game ended in a 1–0 home loss for Toronto.[22]
Cann was released by Toronto on November 15, 2012.[23][24] He subsequently entered the 2012 MLS Re-Entry Draft and became a free agent after going undrafted in both rounds of the draft.
Cann was re-signed for the 2015 season and served as the team captain.[28][29]
Canada
In the summer of 2016, he returned to the CSL circuit to sign with Scarborough SC.[30] He made his debut on August 8, 2016, against Ukraine United.[30] He recorded his first goal on October 9, 2016, in a 2–1 defeat to the Serbian White Eagles.[31] Cann would help the eastern Toronto side secure a playoff berth by finishing third in the league's first division.[31] In the postseason, the club was eliminated in the opening round by Hamilton City.[32] In the 2017 season, Scarborough qualified for the playoffs once again where they initially defeated Brantford Galaxy and later Vorkuta to reach the championship final.[33] Scarborough would be defeated in the finals in a penalty shootout by the York Region Shooters[34] Cann was named the team captain for the 2018 season.[35] The eastern Toronto side managed to reach the championship final for the second consecutive year but was defeated by Vorkuta.[36]
After a two-year absence, he returned to CSL for the 2021 season to play with the Serbian White Eagles.[37] He re-signed with Serbia for the 2022 season.[38] Throughout the 2022 campaign, he helped the Serbs in securing the regular-season title including a playoff berth.[39] In the second round of the postseason, the Serbs were eliminated from the competition after a defeat to FC Continentals.[40] Cann returned for the 2023 season.[41] He would win more silverware with the Serbs in 2024 as they defeated his former team Scarborough for the Royal CSL Cup.[42]
Indoor career
In the winter of 2018–19, he transitioned into the indoor soccer format signing with the Mississauga MetroStars an expansion franchise that competed in the American-based Major Arena Soccer League.[43][44] Cann along with teammate Dwayne De Rosario were named the team co-captains.[45] He made his debut for the club on December 1, 2018, against the Baltimore Blast.[45] In their debut season, the club failed to secure a playoff berth by finishing fourth in their division.[46] In total, he appeared in 13 matches.[47] The club would fold the following season.[46]
International
He made his debut for Canada in a January 2008 friendly match against Martinique. Cann was also chosen in the 23-man roster for the 2009 CONCACAF Gold Cup where Canada won Group A with seven points before being knocked out by Honduras in the quarter-finals.[48] His last cap came in 2011, earning him a total of nine caps, two of which were FIFA World Cup qualification matches.[49]
After retiring he became a real estate agent. In 2020, he became involved with a group looking to found a professional soccer team in Peterborough, Ontario to play in League1 Ontario. The team became known as Electric City FC, with Cann hoping to serve as the team's head coach after retiring.[43]