49ers running back Frank Gore is getting a little tired of tight end Vernon Davis’ immaturity.

From the San Jose Mercury News:

“It’s his fourth year now. Now it’s time,” Gore said.

The 49ers running back spoke to reporters a day after Davis said some teammates were upset by his latest training-camp fight. Coach Mike Singletary punished the entire team after Davis’ scuffle by making players run sideline-to-sideline sprints. Gore was among those unamused.

“I wasn’t mad about having to run gassers,” he said. “I just feel it’s his fourth year now, and I told him it shouldn’t be him now. Everybody makes mistakes but it shouldn’t be him. OK, a rookie? I accept that.”

In three years, Davis has recorded 103 receptions for 1,132 yards and nine touchdowns. Those numbers might be suitable for a tight end that is the third passing option in an offense, but not one that was supposed to emerge as the next great tight end after being selected with the sixth overall pick in the 2006 draft.

Davis is only 25, so there’s still time for him to turn his career around. But as Gore indicated in his comments, Davis needs to show more maturity as he enters his fourth season. He seems to be at a crossroads in his career, where he either starts living up to some of the hype that surrounded him when he was drafted, or head down bustville like so many top 10 picks that came before him.