*Club domestic league appearances and goals, correct as of 12 November 2023 ‡ National team caps and goals, correct as of 23:23, 11 November 2021 (UTC)
Born in Malmö, Lewicki started off his career with Malmö FF before joining FC Bayern Munich's youth organization in 2008. In 2011, Lewicki returned to his native Sweden to play for BK Häcken. In 2015, he rejoined his boyhood club Malmö FF with which he has won the 2016, 2017, 2020, and 2021Allsvenskan titles.
Lewicki joined FC Bayern Munich from his native Malmö FF in 2008 and settled into their youth setup. He was first involved with Bayern's reserve team towards the end of the 2009–10 season appearing as an unused substitute in a number of matches as the season drew to a close. He made his debut at the beginning of the following season in a 4–1 defeat against Kickers Offenbach and made 33 appearances as the club got relegated from the 3. Liga. He was offered a pro-contract at the first team but declined.[3] In June 2011 he became a free agent.[4]
BK Häcken
Despite FC Bayern Munich trying to re-sign him, Lewicki chose to join Swedish side BK Häcken in August 2011 after having penned a contract lasting through to 2014. The main reason for the switch was due to the presumable lack of first-team football in the near future with the German team.[5] Lewicki spent four seasons at Häcken before leaving the club at the end of his contract in 2014.
Malmö FF
Lewicki's first club Malmö FF announced that he would return to the club on a three-year contract on 13 November 2014.[6] The transfer went through when the Swedish transfer window opened on 8 January 2015.
Lewicki was a squad member for Sweden at UEFA Euro 2016 and played in two games before Sweden was eliminated in the group stage.[11]
After Euro 2016, Lewicki was out of the national team for the 2018 World Cup cycle. Between 2019 and 2021 he was once again selected for the national team on several occasions, but had to withdraw with various injuries.[12][13]
^"Oscar Lewicki till MFF". mff.se (in Swedish). Malmö FF. 13 November 2014. Archived from the original on 29 November 2014. Retrieved 17 November 2014.