» March 8, 1900: At the Fifth Avenue Hotel in New York, the National League meets and votes to go with eight teams. They pay the Baltimore owners $30,000 for their franchise, with Charles Ebbets and Ned Hanlon reserving the right to sell the players. Cleveland, Louisville, and Washington receive $10,000 each, and Louisville owner Barney Dreyfuss sends most of his players to his Pittsburgh team. The circuit will remain the same for 53 years, until the Boston Braves move to Milwaukee in 1953.

» October 4, 1902: When Pirates owner Barney Dreyfuss demands a game be played despite a rain-soaked Exposition Park field, Cincinnati plays most of its team out of their normal positions. First sacker Jake Beckley starts on the mound for the only time in his career, pitching four innings and giving up eight runs, four earned. Cy Seymour followed, and Turkey Mike Donlin finished up. Reds rookie pitcher Rube Vickers tries his hand at catching, and sets a modern major-league record with six passed balls to help Pittsburgh win 11-2 [It is also a record for both teams in a game. Vickers makes no effort to retrieve wide pitches, and it's a surprise he only had six passed balls.] But Dreyfuss refunds the fans' money and the Reds return their share of the gate to keep the irate fans (not for nothing were they called 'cranks') from wrecking the stadium.

» February 28, 1903: A syndicate headed by Pittsburgh owner Barney Dreyfuss and James Potter buys the Philadelphia Phillies from John Rogers and A.J. Reach for $170,000. It will be another seven years before ownership interest in more than one team is prohibited.

» June 26, 1903: Before the start of the Giants-Pirates showdown Giants catcher Frank Bowerman starts a fight with Pirates player-manager Fred Clarke in the Giants office. While the cause of the brawl is unclear, Pirates owner Barney Dreyfuss reports it to the NL offices and Bowerman is fined $100. Clarke gets no fine, but does take home a black eye. Christy Mathewson then pitches his 5th victory over Pittsburgh, defeating them 8-2, and beating Sam Leever. Sam Mertes, who will lead the NL in doubles and RBIs, doubles home three runs in the 5th.

» September 28, 1903: Pittsburgh owner Barney Dreyfuss announces that, despite rumors to the contrary, the Pittsburgh-Boston world's championship will be played as scheduled. A party of Pittsburgh fans will leave for Boston on the 28th.

» October 15, 1903: With Pirates owner Barney Dreyfuss putting his club's $6,699.56 gate receipts into the players' pool, the 16 Pirates receive $1,316 each, more than the victorious Boston players' $1,182. Deacon Phillippe receives a bonus and 10 shares of stock in the Pirates for his heroic efforts.

» April 26, 1905: Barney Dreyfuss, claiming the fans want to see more hitting, calls for abolishing the spitball. But it will remain legal until 1920.

» May 19, 1905: Banished yesterday for brawling with Pittsburgh manager Fred Clarke, John McGraw roams the Polo Grounds before today's game with the Pirates, shouting insults at Pirates owner Barney Dreyfuss. McGraw accuses him of controlling the NL umpires through league president Harry Pulliam and welching on gambling debts. McGraw is again ejected during the game. Dreyfuss will files a formal protest with the league about McGraw's behavior, his swearing, and his shouting "Hey, Barney" at Dreyfuss from the field. He also contends that the Giants manager offered to wager $10,000 that the Giants would win the game. McGraw responds to Dreyfuss' complaint by stating that NL President Pulliam could not "forget his former role as the secretary to Dreyfuss." A meeting of the Leagues directors results in a $150 fine and 15-day suspension for McGraw, but John Brush immediately gets a Superior Court injunction blocking the suspension and further hearings exonerate McGraw.

» May 27, 1905: Harry Pulliam levies a $150 fine and a 15-day suspension. John McGraw files for an injunction against the fine and suspension, which the judge eventually grants. On June 1st the NL board meets in Boston and clears McGraw of the Dreyfuss charges, then censures Barney Dreyfuss for engaging in a public altercation with McGraw. The "Hey, Barney" line will follow Dreyfuss for years.

» June 22, 1909: The National League postpones its games for today because of the funeral of George Dovey, co-owner of the Boston Nationals with his brother John. Pittsburgh owner Barney Dreyfuss is one of the honorary pall bearers for the funeral in Philadelphia.

» July 22, 1911: The Pirates pay St. Paul of the American Association $22,500 for righthander Marty O'Toole, the highest purchase to date. Barney Dreyfuss spends another $5,000 for his batterymate Billy Kelly. In 1912, O'Toole will be 15–17 and lead the NL with 159 walks. He will last only two more years.

» December 14, 1911: Pirates owner Barney Dreyfuss proposes that each team in the World Series be required to turn over one-fourth of its share of the gate to the league, to be divided among the other teams. Until now, 10 percent of the gross has gone to the National Commission, 60 percent to the players, and the rest to the two pennant-winning clubs. The National League will pass the resolution and send it to the American League. It marks the beginning of changes that ultimately give players of the first four clubs a percentage of the World Series money.

» January 9, 1915: The National Commission declares University of Michigan senior George Sisler a free agent after a 2-year fight. The Pirates' owner Barney Dreyfuss claimed rights to Sisler, who had signed a contract as a minor but never played pro ball. After graduating, Sisler will sign with the St. Louis Browns, managed by his former college coach, Branch Rickey.

» February 23, 1918: Barney Dreyfuss of the Rules Committee launches a campaign to ban the spitter. He will succeed next year.

» August 13, 1926: Pittsburgh players ask that Fred Clarke, assistant to owner Barney Dreyfuss, not be permitted to sit on the bench. Dreyfuss squelches the revolt by releasing Carson Bigbee and Babe Adams, and suspending Max Carey, who has slumped to .222. Carey is waived to the Dodgers.

» February 5, 1932: Barney Dreyfuss, owner of the Pirates, dies at the age of 66 of complications following surgery.