|Date of birth||18 February 1982|
|Place of birth||Cape Town, South Africa|
|Height||6 ft 0 in (1.83 m)|
|Playing position(s)||Defender, Midfielder|
|2000||Vasco da Gama|
|2004–2006||Milwaukee Wave (indoor)||47||(9)|
|2005||Milwaukee Wave United||17||(2)|
|2006–2008||Detroit Ignition (indoor)||60||(23)|
|2008–2010||Baltimore Blast (indoor)||24||(8)|
|2010–2016||Milwaukee Wave (indoor)||105||(28)|
|2012||San Antonio Scorpions||26||(3)|
|2016—2018||Cedar Rapids Rampage (indoor)||20||(2)|
|2018||Baltimore Blast (indoor)||6||(1)|
|2000–2003||South Africa U23|
|2016–||United States beach soccer|
|2017—2018||Cedar Rapids Rampage|
* Senior club appearances and goals counted for the domestic league only and correct as of 24 January 2019|
‡ National team caps and goals correct as of 2 May 2009
Born in Cape Town, Greenfield began his career in his native South Africa, playing professionally for Cape Town-based team Vasco da Gama in 2000, and then for Mamelodi Sundowns in the South African Premier Soccer League from 2000 to 2003.
Greenfield moved to the United States in 2004, and has since divided his time playing both outdoor and indoor soccer, for Milwaukee Wave United and Minnesota Thunder in the USL First Division, and for Milwaukee Wave, Detroit Ignition and Baltimore Blast in the Major Indoor Soccer League and the National Indoor Soccer League.
Greenfield represented South Africa internationally at U-23 level, but has never played for the senior South African team.
- "Jonathan Greenfield and Baltimore Blast Win the 2009 NISL Championship". Archived from the original on 30 January 2018. Retrieved 5 May 2009.