Acquired in a "blockbuster" trade during the 1997-1998 offseason with the now-departed Yamil Benitez for Jon Nunnally.
As with last year, Tatis has a chance to finish the season with a higher HR + SB total than McGwire. Yes, I know McGwire doesn't steal bases, but that's the point.
Tatis: 30 HR + 30 SB = 60
McGwire: 60 HR + 0 SB = 60
See? It's a toss-up.