ruthfulness การใช้

• Kafelnikov, the world No . 7, played the final set against Volkov with a ruthfulness that makes many people believe the 21-year-old is the newcomer most likely to challenge Agassi and Sampras.
• Kafelnikov, the world No . 7, played the final set against Volkov with a ruthfulness that makes many people believe the 21-year-old is the newcomer most likely to challenge Agassi and Sampras'dominance at the top.