Tsartsaris was first noticed by professional Greek clubs as a wonder kid, when he was playing in the lower divisions for the team of Filippos Verias.

In June 2013, after conquering the double in Greece, by winning both the Greek League and Greek Cup in the same season, Tsartsaris announced his decision to finish his playing career, after wearing Panathinaikos' jersey for 11 successful years.

[5] Tsartsaris was a member of the senior men's Greek national basketball team that won the gold medal at the 2005 EuroBasket and the silver medal at the 2006 FIBA World Championship.

[6] Tsartsaris began his coaching career in 2014, working at the young cadet academy school level.

[7] On April 21, 2016, it was revealed that Tsartsaris would become an assistant coach of Argyris Pedoulakis, with Panathinaikos.