|Full name||Mathias Peter Greve Petersen|
|Date of birth||11 February 1995|
|Place of birth||Denmark|
|Height||1.86 m (6 ft 1 in)|
|Playing position||Right winger|
|* Senior club appearances and goals counted for the domestic league only and correct as of 30 September 2018|
Greve came to OB at the age of 11, from Langeskov IF.
At the age of 19, Greve was promoted to the first team squad in the summer 2014 and did also sign a full-time contract senior contract with OB in April 2014.
Greve scored his first goal for OB on 31 May 2015 in a 2-2 match against Hobro IK in the Danish Superliga, where Greve was in the starting lineup and scored in the 79nd minut. On 1 November 2015, Greve got his contract extended until 2019.