Entities mentioned:
- Aryna Sabalenka: Ambition, Competitive spirit, Professional pride
- Markéta Vondroušová: Self-preservation, Professional pride, Duty
- Jessica Pegula: Ambition, Competitive spirit, Determination
- US Tennis Association: Professional pride, Duty, Obligation

Article Assessment:
Credibility Score: 85/100
Bias Rating: 50/100 (Center)
Sentiment Score: 45/100
Authoritarianism Risk: 15/100 (Strongly Democratic)

Bias Analysis:
The article presents a balanced view of the tournament events, focusing on factual reporting of match outcomes and player situations. It gives equal attention to players from different countries without favoring any particular nationality.

Key metric: International Sports Competitiveness

As a social scientist, I analyze that this article highlights the unpredictable nature of professional sports and its impact on international competitiveness. The withdrawal of Vondroušová due to injury demonstrates the physical demands of tennis at the highest level. Sabalenka's advancement without playing may provide her with an advantage in terms of rest, potentially improving the US Open's competitiveness. Pegula's consistent performance without losing a set indicates a potential shift in American tennis prowess. These events collectively influence the United States' standing in international tennis, affecting perceptions of the country's athletic capabilities on the global stage.

Entities mentioned:
- Aryna Sabalenka: Ambition, Competitive spirit, Pride
- Markéta Vondroušová: Self-preservation, Professional pride, Disappointment
- Jessica Pegula: Ambition, Determination, Professional pride
- US Tennis Association: Duty, Professional pride, Obligation

Article Assessment:
Credibility Score: 85/100
Bias Rating: 50/100 (Center)
Sentiment Score: 45/100
Authoritarianism Risk: 15/100 (Strongly Democratic)

Bias Analysis:
The article presents a balanced view of the tournament events, giving equal attention to players from different countries. It relies on factual reporting of match outcomes and player statements without apparent favoritism.

Key metric: International Sporting Performance

As a social scientist, I analyze that this article highlights the competitive nature of international tennis and its impact on US sporting performance. The withdrawal of Vondroušová due to injury demonstrates the physical demands of high-level tennis and the importance of athlete health management. Sabalenka's advancement to the semifinals without playing may give her a physical advantage, potentially improving the chances of a non-American winning the tournament. Conversely, Pegula's strong performance represents a positive indicator for US tennis, potentially boosting national morale and inspiring future American athletes. The article also underscores the unpredictable nature of sports competitions and how external factors like injuries can significantly influence outcomes, affecting national sporting metrics and international standings.