Matonis was responsible for four eliminations during a fast moving Day 3, which began with 24 players and ended with the final nine.
The decisive hand in his rise came against Estonia’s Kristjan Jaan Kosk.
Matonis held pocket queens against Kosk’s pocket kings and appeared to be in serious trouble, but two additional queens arrived on the board to give the Lithuanian four of a kind.
Kosk was eliminated in 18th place, while Matonis used the huge pot as the foundation for his final table chip lead.
He later moved past the ten million mark and finished the day as the only player above Marfil in the counts.
Marfil is the clear nearest challenger and holds more than twice the average stack.
Germany’s Julian Selinger, who began Day 3 as the chip leader, remains firmly involved with 6,500,000.
Denmark’s Fehim Hajdari is close behind Selinger on 6,050,000, while Finnish players Kai Lehto and Feras Abid give the final table a strong Nordic presence.
Lehto is one of the more experienced players remaining. The Finnish regular has previously won a Kings of Tallinn title and enters the final day with 23 big blinds. Abid has less room to manoeuvre with 12 big blinds, but remains ahead of French short stack Valentin Imperatore.