Doug McDermott - San Francisco 49ers
In looking at his past tweets, it appears that Doug McDermott is a fan of both the New York Giants and the San Francisco 49ers. Since New York went just 4-13 and never had a chance for the postseason, I imagine all of McDermott's hopes will be on the 49ers to upset the Dallas Cowboys on Sunday afternoon.
McDermott has tweets about the Niners dating back to September 2011 and their Instagram page is the only NFL team he follows. I think it's safe to say he'll be rooting what many Spurs fans consider to be the enemy on Sunday.
A few more Spurs fans follow NFL teams that, unfortunately, all have already had their seasons come to an end. Derrick White's Denver Broncos went just 7-10 this season and haven't had a winning season since 2016-17
Backup point guard Tre Jones has tweeted plenty of times about the Minnesota Vikings in the past.
The Vikings finished with an 8-9 record this season, missing the playoffs for the second straight season.
Dejounte Murray's hometown team, the Seattle Seahawks, won't be seeing playoff action for the first time since 2017 after finishing with a 7-10 record.
Thaddeus Young, born in New Orleans, has been a Saints fan for years and has been vocal about it on Twitter since 2010. Although they finished with a winning 9-8 record, they'll also be watching from home for the first time since 2016.
Lastly, Spurs rookie Joe Wieskamp once tweeted his support for the Indianapolis Colts and follows Carson Wentz on Instagram. The former Eagles quarterback raised a lot of questions with his underwhelming performance in week 18 that sent the Colts out of playoff contention.
As far as I can tell, these are all the Spurs who've made their NFL allegiances known on social media in some form, and only three of those teams are still alive this season. Better luck next year, guys.