The Polish fighter won by unanimous decision.
The fight took place as part of the UFC Vegas 57 tournament in Las Vegas (USA).
25-year-old Tsarukyan had 21 fights.
In 18 of them he won, and in three he was defeated.
The last time he lost to Russian Islam Makhachev in his debut fight in the UFC, after which he took over in five fights in a row.
Gamroth has 21 wins and one loss.
In October 2020, the Pole lost a split decision to the Georgian Guram Kutateladze, but then won three times in a row.
Earlier, Sayat Abdrakhmanov, representing the interests of the Russian UFC fighter Pyotr Yan, said that the athlete would be ready to fight in the autumn in Abu Dhabi (UAE).