|Date of birth||17 June 1985|
|Place of birth||Ajaccio, France|
|Height||1.85 m (6 ft 1 in)|
|2014–2015||San Jose Earthquakes||27||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 22:09, 1 January 2021 (UTC)|
Jean-Baptiste began his professional career with AC Ajaccio during the 2006–07 season, making his debut under coach Ruud Krol. He made 25 appearances in his debut season in Ligue 2, and was also an important player during Gernot Rohr's tenure at the club. He also captained the club during the 2010–11 season in which he helped Ajaccio gain promotion to Ligue 1. In his first season in the top flight, Pierazzi appeared in 34 league matches and helped the club maintain its Ligue 1 status. During his time with Ajaccio, Pierazzi appeared in 112 Ligue 2 matches and 67 Ligue 1 matches.
- "Jean Baptiste Pierazzi Pourrait quitter l AC Ajaccio" [Jean Baptiste Pierazzi to quit AC Ajaccio] (in French). France3. December 30, 2013. Retrieved December 30, 2013.
- "Jean Baptiste Pierazzi signs with San Jose". mlssoccer.com. January 7, 2014. Retrieved January 7, 2014.
- Jean-Baptiste Pierazzi at Major League Soccer
- Jean-Baptiste Pierazzi at L'Équipe Football (in French)
- Jean-Baptiste Pierazzi – French league stats at LFP – also available in French