Miguel Tejada signed with Oakland as an Amateur Free Agent from the Dominican Republic in 1993, and he would crack the main roster in 1997. Tejada would be the starting Shortstop in 1999, where he would establish himself as one of the best power hitting infielders in the game. From 2000 to 2002, he would have 30 Home Runs, and from 2000 to 2003, he was able to secure at least 100 RBIs. Tejada was an All-Star in 2002, the year he had 24 Home Runs, 131 RBIs and a .308 Batting Average. For his efforts, he would win the American League MVP.
The Shortstop signed with the Baltimore Orioles as a Free Agent, ending his Athletics career with 968 Hits and 156 Home Runs.
Sadly, Tejada is more known for his 105 Game steroid suspension, and likely lying about his age (he is allegedly two years older than he listed himself to be).