Jaguars head coach Gus Bradley announced on Monday that Pasztor was most likely out and ESPN's Michael DiRocco has confirmed the news.
#Jaguars announce that RT Austin Pasztor has a ruptured hamstring and is likely out for the year.— Michael DiRocco (@ESPNdirocco) December 1, 2014
Pasztor was an unlikely starter for the Jaguars last season, but started 12 games in 2013. He played eight games in 2014 before suffering his season-ending injury.
Undrafted rookie Josh Wells replaced Pasztor against the Giants. Veteran Sam Young, who has been inactive much of this year, could also compete for the starting job over the course of the final four games.
The Jaguars play the Houston Texans and All-Pro defensive end J.J. Watt next week.