Player name: Sergio Martínez

Nationality: Uruguay

National team: Uruguay

Notes:

• No widely known Uruguayan international named Sergio Martínez appears in major historical records up to mid-2024. There are multiple footballers named Sergio Martínez from other countries (notably Argentina and Spain), and several Uruguayan players with the surname Martínez, which can cause confusion.
• If you have additional details — such as date of birth, position (forward, midfielder, defender, goalkeeper), clubs played for, years active, or a common nickname — I can search more precisely and return a fuller profile with career statistics and clubs.