Wales could drop out of the top two tiers in the World Rugby rankings if they lose to Scotland this weekend.
Wayne Pivac's side, who currently sit eighth, will likely find themselves in ninth place come Monday morning if they are beaten on home soil.
A defeat should see them lose enough rankings points for Argentina to leapfrog them without playing a game. Wales' lowest ever ranking is 10th, which they fell to in 2007 and 2013.