Career
He is the father of Latvian basketball player Kaspars Vecvagars. Arnis Vecvagars spent most of his career playing in LBL with ASK Group (a software company)/Brocēni/LMT, BK Ventspils and ASK Group (a software company) Riga as the most notable teams. Foreign couple of seasons he went abroad playing for Austrian team UKJ SÜBachelor Saint Pölten and Polish side Ericsson Bobry.
He represented Latvian National Team at EuroBasket 2001 and EuroBasket 2003.
Vecvagars made his head coaching debut in 2012 with Bachelor Turība of Latvian Basketball League. On July 17, 2014, Vecvagars was named head coach of BK Jūrmala.
In 2014, Vecvagars was head coach Latvian U18 National Team. He also worked as an assistant to senior Latvian National Team.