[3] Born in Pasadena, California,[citation needed] to parents of Polish descent,[4] Larentowicz played college soccer for Brown University from 2001 to 2004.

Before Brown, he helped lead traditional Philadelphia-area power Chestnut Hill Academy to back-to-back Interacademic League championships in 2000 and 2001.

[5] As a defensive midfielder who occasionally ventures into the offensive half of the pitch, he was called der Kaiser by Paul Mariner, a reference to Franz Beckenbauer.

"[7] On January 21, 2010, he was traded to Colorado Rapids along with Wells Thompson in exchange for Preston Burpo, Cory Gibbs, a 2011 MLS SuperDraft pick, and allocation money.

[8] On November 17, 2011, it was announced that he was training with Premier League club Bolton Wanderers following a recommendation by United States national team coach Jürgen Klinsmann.

[10] In the 2013 season, Larentowicz proved an effective addition to the Fire squad appearing in 32 games, scoring two goals, and contributing four assists.

[13] He made his debut against Real Salt Lake on April 23, 2016, helping the Galaxy end the last undefeated streak of this season with a 5–2 victory.