sentences:  Mitrev collected his first A Group title winner's medal at the end of the 2006–07 season, playing 12 matches in all competitions.On 10 March 2009, Mitrev scored 90-meters goal for the second team of Levski in a game against Vihren Sandanski.On 9 May 2009, he kept a clean sheet in a 2–0 win in the Eternal derby of Bulgarian football against CSKA Sofia.