Sinnema began his work as an assistant during the 2015 season at Dordt. Prior to coming to Dordt, Sinnema coached baseball at West Sioux High School in 2011 and has also coached several seasons of high school basketball and golf at Manhattan Christian High School in Churchill, Montana.
Patrick Sinnema graduated from Dordt College in 2011 and played four seasons for the Defenders baseball program, primarily as a pitcher. He finished as the career leader in innings pitched, third in wins, and fifth in strikeouts. He earned all-conference recognition in 2010 and 2011.
B.A. HPER - Exercise Science and Recreation Management, Dordt College, 2011
Sinnema has a wife, Kelly.