2007-08: Mark Owuya backstopped Djugarden's U20 team, posting a 2.86 goals against average and a .901 save percentage after 21 games. Suited up for Sweden's U19 team.
2008-09: Had quite the season with Almtuna, posting a 2.26 goals against average and a .911 save percentage after 40 games. Took home the silver with the U20 squad at the WJC.
Owuya was passed over in the 2007, 2008 and 2009 drafts.
2009-10: Signed to a contract by his home club Djurgarden, Owuya was loaned to Orebro and Mora in Sweden's second league, Allsvenskan. In 24 games with 11th-place Orebro he had a 3.80 GAA and .886 save percentage. Owuya played in five regular season games for Mora with a 3.39 GAA and .889 save percentage. Owuya stopped 16 of 17 shots in relief of Mora starter Lars Johansson in his only qualifying series appearance.
2010-11: Owuya shared the goaltending duties with Islanders' prospect Stefan Ridderwall in his rookie Elitserien season with Djurgarden. In 32 games with the sixth-place club, he finished with the league's top save percentage (.927) and had a 2.18 GAA with two shutouts. Owuya skated in all seven playoff games in Djurgardens' series with Lulea and had a 1.66 GAA and .934 save percentage with back-to-back shutouts in Games 5 and 6. Owuya signed a two-year, entry-level contract with the Maple Leafs in April 2011.
2011-12: Owuya played for the Maple Leafs' AHL and ECHL affiliates — the Toronto Marlies and the Reading Royals — in his first pro season in North America. He saw his most extensive action with the Marlies in November, going 4-3 with one shootout loss in eight games and posting a 2.02 goals against and .930 save percentage. Overall he appeared in 19 games for the Marlies, who finished first in the North Division and reached the AHL Finals. He had an 11-6 record with 2 shutouts and had a 1.94 goals against and .929 save percentage. He did not appear in any playoff games. In 25 games with Reading he was 16-5-3 with 2 shutouts and had a 2.63 goals against and .930 save percentage.
A butterfly goalie with a technique that is not very developed nor pretty, but he has good attitude, self confidence and stops the pucks, which it all is about in the end. He has a lot of advantage being of large size (6’2) and is pretty good at moving side-to-side. Has problems with high shots. Agility could still be better.
Owuya began the 2012-13 season with the Toronto Marlies of the AHL.
Projection: Unorthodox depth goaltender.