Kevin Seitzer’s best season of his Major League Baseball career was in his rookie season where in 1987 he was the runner-up for the Rookie of the Year and was the co-leader in Hits.  Seitzer put up what would be career highs in Home Runs (15) and bWAR (5.8) while also boasting a .323 Batting Average and a trip to the All Star Game.  Seitzer never duplicated that year, but he still would put up three more 165 Hit seasons and would have a .294 career Batting Average over his six years in Kansas City.

In the mid-1970’s it was expected that Steve Busby would have an incredible career and for a couple of seasons that was certainly the case.  In his rookie year, Busby won 16 Games and was a 22 Game winner in his second season (1974) and would go to his first of two straight All-Star Games.   1975 would see Busby net 18 Wins and at this point, it was believed that Steve Busby was considered one of the top ten Pitchers in the American League. 

Johnny Damon will always be best known for his run with the Boston Red Sox where he helped them win their first World Series in decades, but his star began as a member of the Kansas City Royals.

Darrell Porter would play more seasons with Milwaukee and would win a World Series with St. Louis (where he was both the NLCS and World Series MVP) but in between those teams he played the best baseball of his career with the Kansas City Royals.