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.
Mayagüez Athletics Stadium
The Mayagüez Athletics Stadium is 13,000 capacity stadium in Mayagüez, Puerto Rico opened in 2010.  
The stadium is owned by City of Mayaguez, and operated by Puerto Rico Sol. It hosted the athletics and soccer games of the 2010 Central American and Caribbean Games. In 2019 the stadium will host invitational tournament Puerto Rico Cup. The stadium has a soccer field based on the requisites of International Federation of Association Football, it will also have a 400-meter track which complies with the parameter of the International Association of Athletics Federations.