Derek M. Kerswill (born April 5, 1973 in Wilmington, Delaware) is an American musician best known for his drumming in the bands Unearth, Seemless, Kingdom of Sorrow, and multiple fill-ins/studio projects.
He has also spent time in Shadows Fall, Icepick, and a host of studio work that has demonstrated his diverse playing, while always maintaining a style all his own.
Another new project with Matt Bachand and Jon Donais of Shadows Fall fame has surfaced in the form of a heavy and 80's influenced rock/metal band called Dead of Night.
In late 2014, a new supergroup featuring Derek & Brian Fair of Shadows Fall surfaced in the form of Downpour and rumors have been flying through the metal industry for months claiming they have an entire record finished and they are just waiting for the "right label" before releasing.
He also uses and endorses Aquarian drumheads, Vater drumsticks (he uses X-Treme Designs "Punisher" and "Warrior"), XL Specialty Cases and Meinl cymbals.