May 291916 — Christy Mathewson defeated the Boston Braves 3-0 for the New York Giants' 17th consecutive road win.1922 — The U.S. Supreme Court ruled organized baseball was primarily a sport and not a business, and therefore not subject to antitrust laws and interstate commerce regulations. The suit had been brought by the Federal League's Baltimore franchise.1928 — Bill Terry hit for the cycle to lead the New York Giants to a 12-5 win over Brooklyn at Ebbets Field. Terry became the first player in major league history to include a grand slam as part of the cycle.1942 — New York's Lefty Gomez self-described as the worst-hitting pitcher in baseball banged out four hits while pitching a 16-1 four-hitter against Washington.1946 — In a reverse integration role, Edward Klep became the first white to play in the Negro leagues in a game played in Grand Rapids. Klep pitched seven innings for the Cleveland Buckeyes against the American Giants in his debut with the Negro American League team.1965 — Philadelphia's Richie Allen hit a 529-foot home run over the roof of Connie Mack Stadium off Chicago's Larry Jackson in the Phillies' 4-2 victory.1976 — Houston's Joe Niekro was the winning pitcher and hit a home run off his brother, Phil Niekro. The Astros beat the Atlanta Braves 4-1. It was the only home run hit by Joe in his 22-year major league career.1990 — Oakland's Rickey Henderson broke Ty Cobb's 62-year-old American League stolen base record, but the Toronto Blue Jays still beat the Athletics 2-1. Henderson's 893rd steal came in the sixth inning.2000 — Oakland second baseman Randy Velarde turned the 10th unassisted triple play in regular-season history during a 4-1 loss to the New York Yankees.2002 — In an article in Sports Illustrated magazine, former NL MVP Ken Caminiti stated that about 50 percent of current major league players used some form of steroids.2010 — Philadelphia's Roy Halladay threw the 20th perfect game in major league history, beating the Florida Marlins 1-0. It was the first time in the modern era for a pair of perfect games in the same season. Halladay faced three Marlins pinch-hitters in the ninth. Mike Lamb led off with a long fly ball, Wes Helms struck out, and Ronny Paulino to hit a grounder to third for the 27th out. Halladay struck out 11 and went to either 3-1 or 3-2 counts seven times, twice in the game's first three batters alone.2013 — Dioner Navarro had the first three-homer game of his career, connecting from both sides of the plate at Wrigley Field to lead the Chicago Cubs to a 9-3 win over the Chicago White Sox. Navarro drove in a career-high six runs and scored four times.Today's birthday: Steven Matz 28; Nick Wittgren 28; Trevor Rosenthal 29; Joe Biagini 29.