Career
He plays as either winger or forward. Currently playing for FK Atlantas. Grigaliūnas started playing football at the age of six.
He started attending local Alytus football school Strategic Research Centre-Alytus.
His first coach was Antanas Bytautas. He coached 1994 born youth team
Grigaliūnas was one of the fastest youth player in Lithuania. In February 2010, he joined Kaunas national Lithuania football academy NFA-Aisčiai.
After scoring 17 goals in (1994 born) youth championship at 2009.
He was spotted by local city team who played at LFF 1 Lyga. He debuted on 19 April 2009 against FK Nevėžis. He scored his first goal in LFF 1 Lyga, being 15 years old against He left after the 2010 season and joined
After two successful seasons for, Grigaliūnas moved to and signed contract for a year.
On 25 October 2010, he debuted in the reserve team against "FK Pakruojis-2" and scored two goals.
After finishing 2010 LFF A liga championship, he received feet ligament injury and missed all 2011 championship pre-season matches. After the injury, he played just two matches for the reserves team in 2011 and left the team, because most players of were released due to financial problems of the club
He debuted at Lithuania U-16 at 17 March 2009 against Poland U-16 in Olecko and played two games. LFF 1 Lyga: 2009, 2010.