|Date of birth||28 February 1995|
|Place of birth||Oulu, Finland|
|Height||1.73 m (5 ft 8 in)|
|2013–2014||→ HSV II (loan)||14||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 23 May 2018|
Born and raised in Oulu, Ojala started his footballing career with local club AC Oulu, making his debut on Finnish top-flight on 12 August 2010, only at the age of 15. By doing this, he became the youngest player in history to make an appearance in Veikkausliiga.
He was however unable to make more appearances during the season as AC Oulu finished 11th. Because of their financial situation, the club however dropped down a level as they were denied a league license by the Finnish FA
This proved to be a good career point for Ojala, as he went on making 58 appearances and scoring 9 goals for Oulu during the next three seasons combined in the Finnish second division. During his final season with Oulu, he replaced the legendary Mika Nurmela as the team captain, only at the age of 18.
On 27 August 2013, it was announced that Ojala had joined German Bundesliga side HSV on loan until summer 2014, with an option to buy. He was promoted to train with the first team for the first time in early October.
- AC Oulun Matias Ojalasta historian nuorin Veikkausliigapelaaja (Matias Ojala of AC Oulu, becomes the youngest player ever to make an appearance in Veikkausliiga) Archived 2013-04-28 at Archive.today; 12.8.2010; Veikkausliiga.com (in Finnish)
- AC Oulu Denied League Licence; 8.2.2011; YLE.fi (in Finnish)
- Matias Ojala Oulusta Saksan Bundesliigaan (Matias Ojala joins Bundesliga side HSV) Archived 2013-08-29 at the Wayback Machine 27.8.2013; YLE.fi (in Finnish)
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