Mazzarri in 2012
|Date of birth||1 October 1961|
|Place of birth||San Vincenzo, Italy|
|Height||1.80 m (5 ft 11 in)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Mazzarri, a midfielder and a product of Fiorentina's youth system, made his professional debut in 1981 for Pescara of Serie B, and played a short Serie A stint in Cagliari the following season, before being sold to Reggiana. He had his longest period at Empoli, who won promotion to Serie A for the first time during his time with the Tuscan side. After several spells with mostly minor teams, including a two-year stint with Acireale where he was part of the team who won a historic first promotion to Serie B, and then playing in the Italian second tier in 1993–94, Mazzarri ended his playing career in 1995 with Sassari Torres.
Mazzarri started his coaching career as Renzo Ulivieri's assistant at Napoli in 1998. His first spell in charge came in 2001/2002 for Sicilian Serie C2 team Acireale, where he had been a player from 1992 to 1994. Subsequently, he returned to his native Tuscany to coach Pistoiese of Serie C1 in 2002/2003 and Livorno of Serie B in 2003–04, bringing the amaranto led by Cristiano Lucarelli back to Serie A. He was coach of Reggina from 2004 to 2007, leading the Calabrian side to Serie A survival in three consecutive seasons, the last obtained on the final day of the season despite an 11-point deduction.
On 31 May 2007 he was announced as new Sampdoria coach. He served as Sampdoria boss for two seasons, overseeing a considerable improvement in results, thanks to the likes of Antonio Cassano, who publicly praised Mazzarri's coaching abilities. Sampdoria's 2007–08 campaign ended in an impressive sixth place, which ensured qualification for the UEFA Cup. Mazzarri's fortunes declined slightly in 2008–09, as the blucerchiati ended their campaign in 13th place; despite this, he managed to guide his team into the Coppa Italia Final, notably defeating champions Inter 3–1 on aggregate in the semi-finals, before losing on penalties to Lazio in the final. Mazzarri left Sampdoria by mutual consent at the end of the 2008–09 season.
On 6 October 2009 he was appointed manager of Napoli, replacing Roberto Donadoni. Mazzarri inspired his new charges to finish his debut season in sixth place in Serie A, and was handed a new three-year contract at the end of the campaign. The 2010–11 season proved even more successful as, buoyed by the arrival from Palermo of Uruguay striker Edinson Cavani, Mazzarri's men finished third and qualified directly for the group phase of the 2011–12 UEFA Champions League. Under Mazzarri, Napoli were becoming renowned for their counter-attacking at pace, in a 3–4–3 formation in which Cavani was supported by Argentinian Ezequiel Lavezzi and Slovakian star Marek Hamšík. They finished second in their Champions League group, behind Germany's Bayern Munich and ahead of Manchester City of England, to earn a last-16 tie against another English side, Chelsea which they beat 3–1 at home in the first leg. They were subsequently beaten 4–1 at Stamford Bridge after extra time, being eliminated from the Champions League. He left the Azzurri on 19 May 2013 leading the team to a 2nd place this season.
Mazzarri was officially appointed as the Inter manager on 24 May 2013, after Andrea Stramaccioni was dismissed after a poor performance in the 2012–13 season. On 2nd July 2014, FC Internazionale and Mazzarri agreed to a one-year extension to the current coach’s contract keeping him at the team until 30 June 2016.
- As of 29 October 2014
|Acireale||1 July 2001||30 June 2002||31||10||10||11||32.26|
|Pistoiese||1 July 2002||30 June 2003||39||12||11||16||30.77|
|Livorno||1 July 2003||30 June 2004||47||20||20||7||42.55|
|Reggina||1 July 2004||28 May 2007||123||37||39||47||30.08|
|Sampdoria||1 July 2007||30 June 2009||99||38||29||32||38.38|
|Napoli||6 October 2009||20 May 2013||182||89||50||43||48.90|
|Internazionale||24 May 2013||Present||53||25||18||10||47.17|
- "Mazzarri named Samp boss". Football Italia. 31 May 2007. Archived from the original on 2 June 2007. Retrieved 31 May 2007.
- "È Walter Mazzarri il nuovo allenatore" (in Italian). SSC Napoli. 6 October 2009. Retrieved 6 October 2009.
- "FC Internazionale club statement". 24 May 2013. Retrieved 25 May 2013.
- Walter Mazzarri at Footballplus.com