Table:
text: 2008–09 U.S. Città di Palermo season
Competitions
Serie A - Matches
Date_ Opponent Venue Result_ Scorers Report_
August 30, 2008 – 18:00 Udinese Away Lost 1–3 Bresciano 18
September 13, 2008 – 18:00 AS Roma Home Won 3–1 Miccoli (2), Cavani 
September 21, 2008 – 15:00 Genoa Home Won 2–1 Bovo, Cavani 4
September 24, 2008 – 15:00 Napoli Away Lost 2–1 Miccoli 
September 28, 2008 – 15:00 Reggina Home Won 1–0 Miccoli 
October 5, 2008 – 15:00 Juventus Away Won 2–1 Miccoli, Mchedlidze 
October 19, 2008 - 15:00 Catania Away Lost 0–2  Report
October 26, 2008 - 20:30 Fiorentina Home Lost 1–3 Simplício Report
October 29, 2008 – 20:30 Lecce Away Drew 1–1 Cavani Report

text: 2008–09 U.S. Città di Palermo season
Competitions
Serie A - Matches
Date_ Opponent Venue Result_ Scorers Report_
November 2, 2008 - 15:00 Chievo Home Won 3–0 Miccoli, Kjær, Cavani 
November 8, 2008 - 18:00 Torino Away Lost 0–1  Report
November 15, 2008 - 20:30 Internazionale Home Lost 0–2  Report
November 23, 2008 - 15:00 Bologna Away Drew 1–1 Succi Report
November 30, 2008 - 20:30 AC Milan Home Won 3–1 Miccoli, Cavani, Simplício Report
December 7, 2008 - 15:00 Cagliari Away Lost 0–1  Report
December 14, 2008 - 15:00 Siena Home Won 2–0 Cassani, Simplício Report
December 20, 2008 - 18:00 Lazio Away Lost 0–1  Report
January 11, 2009 - 15:00 Atalanta Home Won 3–2 Miccoli, Bresciano, Cavani Report

text: 2008–09 U.S. Città di Palermo season
Competitions
Serie A - Matches
Date_ Opponent Venue Result_ Scorers Report_
January 18, 2009 - 15:00 Sampdoria Home Won 2–0 Bresciano (2) Report
January 25, 2009 - 15:00 Udinese Home Won 3–2 Simplício (2), Cavani Report
January 28, 2009 - 20:30 AS Roma Away Lost 1–2 Cavani Report
February 1, 2009 - 15:15 Genoa Away Lost 0–1  Report
February 8, 2009 - 20:30 Napoli Home Won 2–1 Migliaccio, Simplício Report
February 15, 2009 - 15:00 Reggina Away Drew 0–0  Report
February 21, 2009 - 20:30 Juventus Home Lost 0–2  Report
March 1, 2009 - 15:00 Catania Home Lost 0–4  Report
March 8, 2009 - 15:00 Fiorentina Away Won 2–0 Simplício, Miccoli Report

text: 2008–09 U.S. Città di Palermo season
Competitions
Serie A - Matches
Date_ Opponent Venue Result_ Scorers Report_
March 15, 2009 - 15:00 Lecce Home Won 5–2 Cavani (2), Simplício, Miccoli, Kjær Report
March 22, 2009 - 15:00 Chievo Away Lost 0–1  Report
April 5, 2009 - 15:00 Torino Home Won 1–0 Cavani Report
April 19, 2009 - 15:00 Internazionale Away Drew 2–2 Cavani, Succi Report
April 19, 2009 - 15:00 Bologna Home Won 4–1 Belleri (own goal), Kjær, Succi, Cavani Report
April 26, 2009 - 15:00 AC Milan Away Lost 0–3  Report
May 3, 2009 - 15:00 Cagliari Home Won 5–1 Migliaccio, Miccoli, Tedesco, Cavani, Succi Report
May 10, 2009 - 15:00 Siena Away Lost 0–1  Report
May 17, 2009 - 15:00 Lazio Home Won 2–0 Miccoli, Migliaccio Report

text: 2008–09 U.S. Città di Palermo season
Competitions
Serie A - Matches
Date_ Opponent Venue Result_ Scorers Report_
May 24, 2009 - 15:00 Atalanta Away Drew 2–2 Succi, Miccoli Report
May 31, 2009 - 15:00 Sampdoria Home Drew 2–2 Miccoli, Succi Report

Question: What is the total number of different teams listed as opponents for the 2008/09 season in US Città di Palermo?