Entities mentioned:
- Aryna Sabalenka: Ambition, Competitive spirit, Pride
- Jessica Pegula: Determination, Recognition, Professional pride
- Naomi Osaka: Ambition, Self-respect, Enthusiasm
- Amanda Anisimova: Determination, Competitive spirit, Self-respect

Article Assessment:
Credibility Score: 85/100
Bias Rating: 45/100 (Center)
Sentiment Score: 65/100
Authoritarianism Risk: 15/100 (Strongly Democratic)

Bias Analysis:
The article presents a balanced view of all players, giving equal attention to both American and international athletes. It provides factual information about past performances and quotes from players without showing favoritism.

Key metric: International Sports Competitiveness

As a social scientist, I analyze that this article highlights the competitiveness of American tennis players on the global stage, particularly in Grand Slam tournaments. The presence of two Americans (Pegula and Anisimova) in the semifinals of the US Open, competing against established international stars, demonstrates the strength of US tennis. This could positively impact the US's international sports competitiveness metric by showcasing the nation's ability to produce and nurture top-tier athletes in a globally popular sport. The success of these players may inspire younger generations, potentially leading to sustained competitiveness in the future. Additionally, the article's focus on personal growth, resilience, and the challenges faced by players like Osaka adds depth to the narrative of athletic achievement, emphasizing the psychological aspects of high-level competition.