Caution needed on Justin Upton

Updated: August 3, 2007, 12:02 PM ET
What do the names Chris B. Young, Pat Burrell, Corey Patterson and Gary Matthews Jr., have in common? First of all, all are on ESPN's most added list for the last week, yet are still owned in fewer than 60 percent of ESPN's standard mixed leagues. As I wrote Thursday, that figure means little to me, but it does show that they are being largely ignored in fantasy.

Two, I wouldn't drop any of these outfielders for Justin Upton. I'll explain.

The big news in fantasy baseball Thursday was the Diamondbacks making the call to bring up the first overall pick of the 2005 draft. Upton is 19 years old.