Just as Stu provided you with a cautionary tale about young superstar prospects, we offer you a similar lesson with this story from the AP:

The swelling in Bryce Harper's left knee isn't getting any better, so the Washington outfielder will see a specialist next week and won't be coming off the disabled list when he is eligible.

Nationals manager Davey Johnson said Thursday that Harper will visit Dr. James Andrews on Monday for a second opinion on the knee that has been troublesome ever since the 20-year-old slugger ran into the wall at Dodger Stadium on May 13.

"We've just got to get the swelling out. We've got to get the inflammation out of there," Johnson said. "We haven't been real successful with our treatment here."

The news is the latest health blow to the Nationals, who are struggling to tread water in the NL East after starting the season as division favorites. The club's other marquee young star, Stephen Strasburg, was placed on the disabled list Wednesday with a strained muscle in the lower back.

Strasburg and Harper out ... it can happen to anyone.