Cardinals outfielder Matt Holliday is working hard at first base in Jupiter, Fla.

Holliday was said to be resistant to a move during the season. According to spies who have seen workouts over there, Holliday is doing it on his own to try to lengthen his career, but if he looks really good there, maybe they'd still consider free-agent OF Alex Gordon.

In any case, with the losses of Jason Heyward, Jon Jay and Peter Bourjos, there isn't much outfield depth in St. Louis. So they'll need to sign someone for the outfield, preferably someone who can play center field.

Holliday, 35, hit .279 last season with four home runs and 35 RBI. He was limited to just 73 games due to injury. 

Matt Holliday
Can Matt Holliday make the switch to first base? (USATSI)