hit the last home run in the history of Crosley Field during the park's final game. The game-winning shot came in the eighth inning off San Francisco Giants pitcher Juan Marichal. May was the most productive member of the Big Red Machine in the 1970 World Series against the Baltimore Orioles. He batted .389 with two home runs, six runs scored which was tied with Boog Powell for Series high and eight RBI which was a five-game World Series record at the time. He also had the highest slugging percentage and on-base plus slugging (OPS) with .833 and 1.283 respectively. His three-run homer to left field off Eddie Watt's first pitch in the eighth inning of Game 4 led to the only Series victory for the Reds who avoided an Orioles' four-match sweep. Although the Reds slumped in 1971, May continued to slug away, hitting 39 home runs (third in the NL) and driving in 98 RBIs (sixth in NL). Consequently, May was named the Reds MVP for the 1971 season. Houston Astros 1972–74 With the Reds needing to shore up their infield defense and add speed on the basepaths and seeing Tony Pérez and May as essentially the same type of player (right-handed power hitters), the Reds sent May to the Houston Astros for future Hall of Famer Joe Morgan. The Astros, badly in need of power after finishing last in the NL in home runs in 1971, completed a trade with the Reds on November 29, 1971 that sent second baseman Morgan, pitcher Jack Billingham, infielder Denis Menke, outfielder César Gerónimo and minor leaguer Ed Armbrister for May, second baseman Tommy Helms and utility man Jimmy Stewart. Although his power numbers dropped in the Astrodome, the toughest ballpark to hit a home run in the National League, he continued to drive in runs on a regular basis. His 105 RBI in 1973 was second in the league. During the 1973 season, May set an Astro club record with a 21-game hitting streak. It was during this streak he hit three home runs in one game (also a club record) and collected his 1000th base hit. On April 29, 1974, May became the 17th player in MLB history to hit two home runs in one inning. Baltimore Orioles 1975–80 May was acquired along with Jay Schlueter by the Baltimore Orioles from the Astros for Enos Cabell and Rob Andrews