Interviewing Mr Lazarev after he came in third, Russia's state-run television channels presented Mr Lazarev as the "champion," apparently hinting that the official results did not matter. Soon after, the hashtag "Lazarev is our winner" began trending on Russian Twitter.
Kremlin-controlled media quickly went into overdrive in attempting to smear the contest, with RT running a bizarre piece titled "Eurovision Song Contest funded by TV license fee system that criminalises poor people."
The sore reaction wasn't limited to social media and media outlets, however.
Even Filipp Kirkorov, another Russian singer who took part in the event, seemed to have a hard time being gracious in the wake of Russia's defeat.
While acknowledging that Jamala was the winner, Kirkorov said the new voting system used in the contest was to blame for her win, claiming that Lazarev should have really won, ignoring second placed Australia.
Russian officials quickly began to dismiss Jamala's win as unfair and illegitimate.
Russian lawmaker Yelena Drapeko blamed Russia's loss on the "information war" being waged against the country, a claim that was echoed by Russian television channels.
"Partly, this is a result of the propaganda and information war that is being waged against Russia. We are talking about the general demonisation of Russia - about how everything with us is bad, about how our athletes are all doping, our planes are violating airspace - all of this, of course, shows (in Eurovision)," Ms Drapeko said in comments to Russia's TASS news agency.
Alexei Pushkov, the head of the State Dumas Foreign Affairs Committee, lamented that Eurovision had "turned into a field for political battles" on Twitter, a thinly veiled criticism of organisers for allowing Jamala to perform a song with political themes.
In early March, Russian officials sought to persuade Eurovision organisers to ban Jamala's song, arguing that it was a politicised attempt to make Russia look bad for its policies in Crimea and the subsequent conflict with Ukraine. Organisers disagreed, however, and let Jamala perform the highly charged song.