Arm & Hammer Park

Arm & Hammer Park, also known as Mercer County Waterfront Park, is a venue located in Trenton, New Jersey. It is the home baseball park for the Trenton Thunder, a Double-A level Minor League Baseball team of the Eastern League. The official seating capacity is 6,150.

The park was built for the 1994 season, although it opened several weeks late due to a rough winter that hampered construction. The sod also was unable to take properly that season, and the field did not properly drain, leading to rainouts on evenings where the sun had been out since noon. The drainage problem was fixed in 1995.

The stadium’s original name was “Mercer County Waterfront Park” when it opened in 1994. “Samuel J. Plumeri, Sr. Field” was added to the original name in 1999 by Trenton Thunder owner, Joe Plumeri (Chairman and CEO of Willis Group Holdings). Samuel J. Plumeri, Sr. was Joe Plumeri’s father. In November 2012, the New Jersey-based Arm & Hammer purchased the ballpark’s naming rights and will maintain its sponsorship through 2032.

In June 2014, the park hosted the first-ever, gold– and bronze–medal games in baseball for the Special Olympics USA National Games. It will be the host site of the Eastern League All-Star Game in summer 2018.