Name: Roberto Fabián Ayala

Nationality: Argentina

Date of Birth: April 14, 1973

Position: Centre back

• Early career: Began professional career in Argentina with Ferrocarril Midland (youth) and made senior breakthrough at River Plate (1994–1995).
• European clubs (highlights):
  • Napoli — Ayala played for SSC Napoli in Serie A from 1995 to 1998. He established himself as a reliable central defender during his time in Italy.
  • AC Milan — Brief spell (1998–1999).
  • Valencia CF — Most notable club spell (1999–2007), where he became club captain, won La Liga twice (2001–02, 2003–04) and reached two UEFA Champions League finals (1999–2000, 2000–01).
  • Real Zaragoza — Played 2007–2008.
  • Racing Club (Argentina) — Finished career 2008–2011.
• International career: Argentina national team centre back from 1994 to 2007, earning 115 caps and scoring 7 goals. Captained the side and featured in multiple FIFA World Cups (1998, 2002, 2006) and Copa América tournaments (winner 1993 squad inclusion was earlier generations; Ayala won Copa América in 1991/1993 were before his senior debut—his international honors include 1995 King Fahd Cup/Confederations Cup and runner-up finishes in Copa América and World Cup-related tournaments). He is widely regarded as one of Argentina’s best defenders of his generation.
• Style of play: Strong in marking and aerial duels, tactically astute, leadership qualities, known for positioning and shot-blocking rather than pace.
• Notable facts:
  • Nickname: "El Ratón" (the mouse) early in career and later "El Ruso" in some contexts.
  • Among Argentina’s most-capped defenders.

Summary: Roberto Ayala is an Argentine former centre back who played for Napoli from 1995–1998 before moving on to AC Milan and achieving his greatest club success at Valencia. He was a long-time Argentina international and respected defensive leader.