On May 6, 1998, 20-year old Kerry Wood of the Chicago Cubs struck out 20 batters against the Houston Astros, the eventual National League Central Winners.
On May 17, 1998, David Wells of the Yankees pitched a perfect game in the 4-0 win against the Minnesota Twins.
In the month of June, Sammy Sosa of the Chicago Cubs became the first player in history to hit 20 homeruns a single month.
On September 20 vs New York, the Baltimore Orioles final home game of the year, baseball's all-time "Iron Man" asked manager Ray Miller to remove him from the starting line-up 30 minutes before game time to end his world record consecutive games streak at 2,632 games.
Barry Bonds of the San Fransico Giants became the first ever player with 400 homeruns and 400 stolen bases.
Ken Griffey, Jr. of the Seattle Mariners hits 56 homeruns for the second consecutive season.
39-year old Rickey Henderson of the New York Mets won the stolen base title to show that he still has his speed.
Mark McGwire of the St. Louis Cardinals and Sammy Sosa of the Chicago Cubs both eclipsed Roger Maris' record; McGwire ending with 70 homeruns, and Sosa with 66.
For the first time, 4 players reached the 50 homerun mark. Mark McGwire (70), Sammy Sosa (66), Ken Griffey, Jr. (56), and Greg Vaughn (50).
Alex Rodriguez of the Seattle Mariners is the 3rd player ever (behind Jose Canseco and Barry Bonds) to have a 40/40 season ending with 42 homeruns and 46 stolen bases.
Juan Gonzalez of the Texas Rangers and Sammy Sosa of the Chicago Cubs made a run for the single season RBI record of 190. Gonzalez ends with 157 and Sosa with 158.
Larry Walker of the Colorado Rockies barely beats John Olerud of the New York Mets for the National League batting crown with a .363 batting average.
The Yankees almost broke the record for regular season wins with 114 (two shy of the Chicago Cubs record).
