Mezue ahịrịokwu na-esonụ: Tjärnqvist bụ onye Dallas Stars wepụtara na 96th n'ozuzu, nke atọ na-ahọrọ na 1999 NHL Entry Draft. N'oge mkpọchi NHL nke 2004/05, Tjärnqvist sooro HV 71 na Elitserien soro ndị otu NHL Manny Malhotra, Jonathan Cheechoo, na Bryan McCabe. N'abalị iri abụọ na abụọ nke ọnwa Febụwarị, afọ 2007, a gbanwere ya nye Phoenix Coyotes, tinyere otu onye a họpụtara na agba nke mbụ na
2007 NHL Entry Draft, maka Ladislav Nagy. Na 2017 Tjärnqvist kwupụtara ọkwa ezumike nka ya.