|Full name||Dorival Guidoni Jr.|
|Date of birth||28 May 1972|
|Place of birth||Nhandeara, Brazil|
|Height||1.75 m (5 ft 9 in)|
|1995||XV de Piracicaba||?||(?)|
|2003||→ Middlesbrough (loan)||5||(0)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
From 2003 until 2006, he played for English Premier League club Middlesbrough, winning the 2004 League Cup and finishing as runner-up in the 2005-06 UEFA Cup. His retired due to a misdiagnosed heart condition while playing for Brazilian club América-SP in 2007.
After five appearances for the club, Doriva was given a one-year contract with Middlesbrough on 21 July 2003.  In his first full season at Middlesbrough, Doriva was first choice in midfield alongside George Boateng. He found his chances limited after this, however, due to the emergence of Stewart Downing and the conversion of Boudewijn Zenden to central midfield. On 29 February 2004 Doriva started as Middlesbrough won their first major trophy, the 2004 Football League Cup Final, with a 2-1 win over Bolton Wanderers in the Millennium Stadium in Cardiff.  His only goal for Middlesbrough came in a 2–1 victory at Notts County in the third round of the FA Cup on 8 January 2005.
In 2005 he earned a one-year contract extension, which Middlesbrough allowed to expire in July 2006.
Blackpool and América-SP
Doriva remained in England following his release from Middlesbrough, joining League One side Blackpool.  He then signed for América-SP in Brazil, where he had a heart problem detected. Doriva's father and grandfather both died from heart conditions, and therefore he decided to retire from playing.  Subsequent tests showed that the diagnosis was inaccurate and he could have continued playing, although he remained retired.
Doriva was part of the Brazil squad which reached the final of the 1998 FIFA World Cup. He wore the number 17 shirt and made one appearance, in the second match of the group. He came on against Morocco in Nantes as a 68th minute substitute for Cesar Sampaio. 
- Notts County 1–2 Middlesbrough – Soccerbase
- Doriva Statistics FIFA. Retrieved 22 January 2010.
- Doriva at National-Football-Teams.com