All facts are from http://www.todayinbaseballhistory.com.
July 24: Carl Yastrzemski hits his 400th career home run (1979); Rusty Staub hits his 1,400th career RBI (1982). Barry Bonds’ birthday (1964).
July 25: The Athletics pull off two triple steals in a game against the Indians, the only time this has occurred in MLB history (1930); race riots in Detroit force the Tigers-Orioles series to move to Baltimore (1967); Andres Galarraga hits home runs in three consecutive innings, tying an MLB record (1995).
July 26: Johnny Bench hits his 300th career home run (1978); Moises Alou makes his MLB debut with the Pittsburgh Pirates (1990).
July 27: 18-year old Mel Ott hits his first MLB home run, an inside-the-part homer (1927). Birthdays: Leo Durocher (1905), Rich Dauer (1952), Floyd Rayford (1957), Alex Rodriguez (1975).
July 28: Joe Borden pitches the first no-hitter in Major League history (1875); Moises Alou gets his first major league hit (1990). Birthdays: Vida Blue (1949), Derek Lee (1966).
July 29: 41-year old Honus Wagner becomes the older player of the 20th century to hit a grand slam (1915) until Tony Perez does so 70 years later at age 42 years and 364 days.
July 30: Willie McCovey makes his MLB debut, going 4 for 4 (1959); George Steinbrenner is forced to resign as general partner of the New York Yankees by commissioner of baseball, Fay Vincent (1990).