In what was just his second year, Don Mattingly engaged in a war for the 1984 batting title with fellow teammate Dave Winfield. Donnie Baseball had the lead heading into the last week of the season, but 12-year vet Dave Winfield went ahead on September 28 to take a two-point lead, .341 to .339. During the last game of the season the two went at-bat for at-bat against Randy O'Neal and the Detroit Tigers. Mattingly ended up with the crown going 4-5 with an overall batting average of .343, while Winfeld went 1-4 with a .340 average.
49. Mattingly Battles Winfield for the Batting Title