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Iconoclastic 49ers tight end Vernon Davis has been called many things. He can now add olive jar to the list.

That one comes courtesy of coach Jim Harbaugh.

“I just feel like he’s ready to break out,” Harbaugh told reporters on Friday regarding Davis. “I really do. You use the old olive jar analogy. The olives are packed in there real tight and you open up the lid and you can’t get any to come out. You can even dump it upside down and it doesn’t come out. But if you get that one to come out, then they just want to all come out and plop out.

“So, I think that’s the case and I think it’s going to happen soon. Hopefully this weekend. Get that one big one and then they start coming out.”

(We’re still talking about olives, right?)

Davis generated a mere 44 yards in Week One against the Cowboys. But that still represents his regular-season high. Over the last three games, Davis has 34 yards. In all three games. Combined.

That’s not the way to earn the contract he held out of offseason workouts to get. Maybe the lesson going forward is that guys who want new contracts should show up for offseason workouts.

Especially when they also decide to become human corporations with a stock price that hinges on their performance. From a high of $12.50 in April, shares in Vernon Davis, Inc. have plunged to $7.10.

It’s enough to trigger an aggressive order to sell! sell!