Baseball in Puerto Rico
By the 1949-50 season, several new ballparks were built, each containing 6,000 or more seats. The largest new stadium was Ponce's Estadio Francisco Montaner with 9,718 seats. Montaner has the distinction of being the first stadium in Puerto Rico that installed an artificial surface field. The installation of lights, which allowed for night games, further boosted stadium attendances. The Stadium was named to honor Francisco "Paquito" Montaner, one of the greatest Puerto Rican pitchers of all times.
List of Mexican League stadiums
The following is a list of current Mexican League stadiums. There are 17 stadiums in use. The oldest stadium is Estadio Revolución, home of the Algodoneros de Unión Laguna, which opened in 1932. The newest stadium is Estadio Fray Nano, home of the Diablos Rojos del México, which opened in 2014. All but two stadiums (Estadio Eduardo Vasconcelos and Estadio Nuevo Laredo) use a natural grass playing surface. One stadium was built in the 1930s, one in the 1940s, one in the 1950s, two in the 1960s, six in the 1970s, one in the 1980s, one in the 1990s, two in the 2000s, and two in the 2010s. The highest seating capacity of all active stadiums is 27,000, at Estadio de Béisbol Monterrey where the Sultanes de Monterrey play. The lowest capacity is Mexico City's Estadio Fray Nano, with 5,200 seats.