|Full name||Per Johannes Hopf|
|Date of birth||16 June 1987|
|Place of birth||Räng, Sweden|
|Height||1.95 m (6 ft 5 in)|
|2009||→ Hammarby TFF||20||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12 May 2016.
‡ National team caps and goals correct as of 15 March 2015
Hopf joined Hammarby in the summer of 2008 after impressing on a trial with the club. He signed a 3 1⁄2-year contract with the Stockholm-based club. During the 2009 season, he was on loan to the affiliated team Hammarby TFF where he was appointed best goalkeeper in the league system.
He made his first game for Hammarby in the final game of Allsvenskan 2009, against BK Häcken, with the club already set for relegation. Hammarby were defeated, 0–1.
In 2010, he started on the bench, being second choice behind former Swedish nationalteam goalkeeper, Rami Shaaban. But after weak appearances by the latter, he soon established himself as first choice.
Among other great achievements he won two penalty shootouts for his team to secure Hammarby IF a place in the 2010 Swedish Cup Final. He was appointed Man of the match when his side lost 0–1 to Helsingborg. 
- "Gençlerbirliği vs. Kasımpaşa". Soccerway. 29 August 2015. Retrieved 6 September 2015.
- "Hamren names Sweden squad for Turkey, Czech Rep friendlies". internationalsoccerteams.com. 18 March 2016. Retrieved 21 March 2016.
- "Johannes Hopf". Svenska Fotbollsförbundet. Retrieved 14 November 2014.
- "Tabell och resultat - Div 2 Södra Svealand, herrar". Svenska Fotbollsförbundet. Retrieved 14 November 2014.
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