Career
Samaris started his career in Gamma Ethniki side Panachaiki in 2006, making a total of 37 league appearances and scored three goals for the club On 10 April 2007, Samaris signed his first professional contract in Panachaiki. On 11 January 2010, he moved to Panionios.
Samaris joined Olympiacos in 2012.
He spent the 2012-2013 season on loan at Panionios. In the 2013 he returned to Olympiacos, and scored his first goal with the club on 23 November 2013 in an away 4–1 victory against Panthrakikos.
Samaris ended the league with 38 appearances and scored four goals en route to the Greeks" 41st title. On 22 August 2014, Samaris moved abroad and joined Portuguese champions Benfica on a five-year contract for a transfer fee of €10 million and with a €45 million release clause.
He made his debut for the Eagles on 12 September against Vitória Sétubal.
At the end of the 2014-2015 season, Samaris mentioned that the Portuguese language was a barrier in his first year with the club The Greek international stressed the importance of learning it by stating, "I liked to learn Portuguese because I became closer to my colleagues. The most important is to understand what my coach says because there was an idea of game and I had to adapt faster than the others"
lieutenant was his first goal in the Primeira Liga.
Samaris is a former Greece under-19 international.
He made his debut in a 2008 European Under-19 Championship qualifier against France. In October 2013, he was called-up to the Greek senior side by manager Fernando Santos and made a substitute appearance in the final group qualifier against Liechtenstein, also coming off the bench in the two play-off matches against Romania.
On 24 June 2014, in his first appearance in a final tournament of the World Cup and against the Ivory Coast, Samaris opened the scoring after capitalizing on Cheick Tioté"s defensive mistake in the 42nd minute in an eventual 2–1 victory. Samaris came on as an early replacement for the injured Panagiotis Kone.