He was one of the best forwards in the Belgrade clubs in the period before the WWII, the star player of BASK, national team striker and an excellent manager. He started playing in 1925 in Jedinstvo Belgrade. In 1928 moved to SK Soko and a year latter the club was renamed into BASK where he'll stay for eleven years, until 1940, when because of a serious lesion of the meniscus, had to stop playing. He is remembered as an excellent technician and a very effective striker.
Beside 23 matches for the Belgrade City selection, and one match for the Yugoslav B team, he played 12 matches for the Yugoslavia national football team having scored 8 goals. He mostly played as a striker or left midfielder. His debut was in Belgrade on 15 March 1931 against Greece (4-1 win) having scored a hat-trick. There was a darker period in his national team career that happened after in a match for the Balkan Cup, in Sofia against Bulgaria (2-3 loss), he failed to materialize a penalty and was afterward absent from the national side for three years! His comeback was in a Balkan Cup realized in Athens in 1935 and was a perfect opportunity for him to demonstrate the unfairnes of his absence, having showed great condition and scored three goals in two matches that much helped his side to win the tournament, whereas Tomašević himself was the best scorer (along with Tirnanić with 3 goals each). His last match was in 22 May 1938 in a friendly match against Italy in Genoa (0-4 loss).