Pennington's tennis program dates back to the mid-nineteenth century. The tennis courts, for many of those early years, were located behind the home and garden of the Head of School; today’s courts sit prominently on the front corner of campus at Green Street and Delaware Avenue. Consistently competitive, the program has had seasons of brilliance over the years, including winning Prep B State Championships and singles players who have competed for and won state and county titles.  The 2021-22 season saw the team capture two individual titles in second and third singles in both the county tournament and Prep B tournament and the team end up with an undefeated regular season record of 10-0.  Pennington also very nearly won first singles titles in both the county and state tournaments.  The tennis team plays a highly challenging schedule among independent and public schools in Mercer County, which is a hotbed for the sport. The School, which also offers a junior varsity tennis program, has five courts as well as access to local indoor courts if needed.