1. The first ever game at Comerica Park was played on April 18, 2000. The Detroit Tigers faced the Seattle Mariners in front of a sold-out crowd of 39,168 fans. The Tigers won the game 5-2.

2. On April 18, 1983, the deadliest tornado outbreak in Michigan history took place. The outbreak produced 11 tornadoes that killed 3 people, injured 230, and caused more than $50 million in damage. One of the tornadoes was rated F3 on the Fujita scale, making it the strongest tornado to ever hit Michigan in April.

3. In 1906, the State Board of Agriculture officially changed the name of Michigan Agricultural College to Michigan State College of Agriculture and Applied Science. The change was made to reflect the school's broader focus on applied sciences and its growing emphasis on research.

4. Detroit native and legendary boxer Thomas "Hitman" Hearns won his first world title on April 18, 1980, when he defeated Mexican fighter Pipino Cuevas in a TKO victory in the second round. Hearns went on to become the first boxer ever to win world championships in four different weight classes.

5. On April 18, 1950, the Michigan Supreme Court ruled in People v. Zajic that a person cannot be convicted of drunk driving based solely on the results of a breathalyzer test. The court found that the test results alone are not enough evidence of intoxication and that additional evidence is needed to prove a driver's impairment. This ruling set a precedent for drunk driving cases across the country.