The VII edition of the Caribbean Series (Serie del Caribe) was played in 1955. It was held from February 10 through February 15, featuring the champion baseball teams from Cuba, Alacranes de Almendares; Panama, Carta Vieja Yankees; Puerto Rico, Cangrejeros de Santurce, and Venezuela, Navegantes del Magallanes. The format consisted of 12 games, each team facing the other teams twice. The games were played at Estadio Universitario in Caracas, the capital city of Venezuela, which boosted capacity to 22,690 seats, while the ceremonial first pitch was thrown by Marcos Pérez Jiménez, by then the President of Venezuela.
Puerto Rico won the Series with a 5-1 record en route for a third straight championship. The Cangrejeros club was managed by Herman Franks and led by the dynamic shortstop Don Zimmer, who posted a .400 batting average (8-for-20) with a .950 slugging and led the hitters with three home runs. Santurce also received a considerable support from outfielders Willie Mays (two HR, nine RBI, six runs, 885 SLG), Roberto Clemente (one HR, .577 SLG, seven runs) and Bob Thurman (.318). Also helping out were catcher Harry Chiti (.333, one HR, .667 SLG) and third baseman Buster Clarkson (.313). Bill Greason (2-0, 2.00 ERA), Sad Sam Jones (1-0, 1.50) and Rubén Gómez (1-0) led the pitching staff, while Zimmer claimed Most Valuable Player honors. Puerto Rico also had veteran OF Luis Rodríguez Olmo in addition to Tite Arroyo (P) and George Crowe (1B). Interestingly the fact that Mays, after going 0-for-13 in the Series, hit a two-out, two-run walk-off homer in the 11th inning of Game 6. Then, he went 11-for-13 in the next three games to finish with a second-best average of .462 (12-for-26) and leading the Series in RBI.