This Day In Baseball History, May 27.

1941  Play is halted in the seventh inning of Braves-Giants game at the Polo Grounds so the crowd of 17,009 and players can listen to President Franklin D. Roosevelt's radio address over the stadium's P.A. system. After FDR announces the Proclamation of an Unlimited National Emergency, the tied 1-1 contest is resumed after a 45-minute delay.

1951  A large ad appears in the Minnesota Sunday Times asking the local fans for their continued support of the Millers despite the promotion of the team's phenom to the major leagues.

Giants owner Horace Stoneham explains Willie Mays' performance, .477 batting average and hitting safely in 33 of 35 games, has warranted the young outfielder's move to the Polo Grounds in New York.

1959  National League president Warren Giles rules the final score of Harvey Haddix's 'perfect game' is 1-0. Henry Aaron (for leaving base path) and Joe Adcock (for passing Aaron) are declared out with Adcock's round-tripper scored as a double instead of a home run.

1960  Orioles catcher Clint Courtney becomes the first backstop to use the big knuckleball glove, an innovation of manager Paul Richards. The larger mitt, which has a 45-inch circumference, helps as knuckleballer Hoyt Wilhelm goes the distance in Baltimore's 3-2 victory at Yankee Stadium in a game that doesn't feature a wild pitch or a passed ball.

1968  Major league baseball expands outside the confines of the United States when the National League announces the addition of Montreal to the circuit. San Diego is also awarded an expansion team.

1992  The last place Braves beat the Phillies at Veterans Stadium, 9-3. The victory is the start of a 78-37 run which will propel Atlanta to its second straight West Division title, finishing eight games in front of the Reds.

1993  After hitting just .143 in 26 games for the Rockies, former Brave superstar Dale Murphy retires from baseball. The two-time National League MVP leaves the game with a career average of .265, 398 home runs and 1,266 RBIs.

2015   Alex Rodriguez's three-run home run gave the Yankees' designated hitter 1,995 career RBIs, passing Lou Gehrig on the Yankee's all-time RBI list.