He went on to attend George Washington University, where he was the team's leading scorer in the 2005-06 season, and helped lead them to two consecutive NCAA tournaments. He is a native of McDonough, Georgia. After college, he played in Greece's top professional basketball league the Greek league with Colossus Rhodes BC.
He was an early entry candidate who was selected by the Dallas Mavericks in the second round of the 2006 NBA Draft, 58th overall and then was later traded to the Los Angeles Lakers for whom he would appear in seven pre-season games. Pinnock was cut from the Lakers along with other Laker hopeful Von Wafer. He played some games in Germany for the Giessen 46ers, but was released by the club and went back to the United States, playing in the D-League, the NBA's minor league, for the Arkansas RimRockers. In September 2007, he was taken first overall in the D-League Expansion Draft by the Rio Grande Valley Vipers.
He played in BSN (Baloncesto Superior Nacional), Puerto Rico's professional basketball league, where he won his first professional championship with the Capitanes de Arecibo in 2010. Danilo Pinnock won the championship again in 2011 when Capitanes de Arecibo repeated as champions. Pinnock was released from Arecibo in March 2014.
|2006-07||Gießen 46ers||German BBL||8||32.0||.378||.333||.613||5.6||2.3||1.0||.8||15.0|
|2007||Toros de Chorrillo||Panama CBS League||no stats available|
|2008||Marinos de Anzoátegui||Venezuela LPB||no stats available|
|2008-09||Seven 2007 Roseto||Legadue||20||33.6||.484||.276||.780||4.8||2.3||3.3||.6||16.3|
|Libertad Sunchales||Argentina LNB||31||30.2||.541||.327||.750||4.8||1.1||2.9||.1||17.7|
|2009||Capitanes de Arecibo||BSN||24||31.1||.474||.385||.844||7.0||3.0||1.5||.7||15.7|
|2010||Capitanes de Arecibo||BSN||9||35.7||.531||.343||.742||7.1||2.2||1.1||.8||16.1|
|2010-11||Titanes del Distrito Nacional||Dominican LNB||no stats available|
|2011||Capitanes de Arecibo||BSN||44||29.8||.502||.321||.707||6.6||2.6||1.2||.5||15.1|
|2012||Capitanes de Arecibo||BSN||50||28.8||.491||.328||.786||6.1||3.8||1.5||.5||14.5|
|2012-13||Halcones Rojos Veracruz||Mexico LNPB||32||28.4||.505||.385||.750||4.7||2.0||1.1||.4||13.1|
|2013||Indios de Mayagüez||BSN||43||31.2||.466||.295||.714||6.5||2.3||1.4||.6||12.6|
|2014||Atléticos de San Germán||6||28.3||.424||.130||.875||4.7||1.8||1.3||1.0||7.3|
|2015||Bucaneros de La Guaira||Venezuela LPB||5||23.3||.520||.182||.846||5.2||1.8||.6||.0||8.6|
|Piratas de Quebradillas||BSN||10||36.8||.477||.189||.914||5.8||3.3||1.9||.7||83.4|
|Huracanes del Atlántico||Dominican LNB||4||33.3||.478||.393||.750||5.3||3.0||1.3||.5||16.0|