Dean is born.
===19831982-83 (approx.)===
[[The Journal (diary entries)|The Journal]] mentions that prior to Mary's death, Dean played t-ball.
In [[7.10 Death's Door]], [[Bobby]] has a flashback to a sunny afternoon in "89-ish," when he took young Dean to a park. Ten-year-old Dean tells him, "Dad says I'm supposed to practice with the double-barrel," but Bobby insists that he gets to throw a ball around "like a regular snot-nosed little jerk."
In [[8.08 Hunteri Heroici ]], Dean says that [[Fred Jones]] gave him his first beer. "I don't even think I was double digits." So unless Dean is misremembering, this happened around or before the age of 10.
===1991 (approx.)===