Entities mentioned:
- Cristian Roldan: Ambition, Professional pride, Determination
- U.S. Men's National Soccer Team: Competitive spirit, Pride, Unity
- Mauricio Pochettino: Ambition, Professional pride, Duty
- Seattle Sounders: Competitive spirit, Professional pride, Recognition

Article Assessment:
Credibility Score: 85/100
Bias Rating: 50/100 (Center)
Sentiment Score: 55/100
Authoritarianism Risk: 15/100 (Strongly Democratic)

Bias Analysis:
The article presents factual information about roster changes and player details without apparent political or ideological slant. The neutral tone and straightforward reporting of sports news indicate a centrist approach to the subject matter.

Key metric: International Sports Competitiveness

As a social scientist, I analyze that this article impacts the U.S.'s international sports competitiveness metric. The addition of Cristian Roldan to the U.S. Men's National Soccer Team roster for upcoming friendlies against South Korea and Japan indicates ongoing efforts to strengthen the team's performance. Roldan's experience, despite not scoring in his 37 international appearances, suggests a strategic decision based on his recent success with the Seattle Sounders in the Leagues Cup. This roster adjustment reflects the team's preparation for future international competitions, potentially enhancing the U.S.'s standing in global soccer. The diverse roster, including players from various leagues and countries, demonstrates the breadth of talent being considered to improve the team's competitiveness on the international stage.