This morning's practice was open to the public -- well, kind of.

The 49ers rotate practice fields to keep them both in good shape. However, the 49ers practiced on the field far away from the bleachers that were set up to accomodate the fans on the south side of the team's facility.

Coach Mike Nolan said he felt bad that the fans were so far away from the action. But he said when he noticed which field the team was set to have its 11-on-11, it was too late to change. All the film equipment was set up on the north field.

This afternoon is also an open session. It is scheduled to be held on the field closest to the stands.

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There was an interesting scuffle during teamwork session, as tight end Vernon Davis came to Delanie Walker's defense. Davis stood up as a team leader in going after Justin Smith.

Walker caught a tight end screen and turned up the field. Smith was in pursuit on the play and he gave Walker a shove in the back. Walker was sent tumbling to the ground.

Davis ran over, yelling at Smith. "What's up with you!?" Davis said. He told Smith that's not what you do to a teammate. "Don't push him down like that," Davis yelled. He went after Smith and had to be separated.

Quite a scene. And Davis is to be applauded for doing it.

Walker certainly appreciated Davis' gesture, but he also has no ill will toward Smith.

"I felt it a little," Walker said of the push in the back. "Justin was just trying to make a play. He pushed me, then I tripped over Shawntae (Spencer) and that made it look worse that it was."

Walker said of Davis, "It shows that he's got my back, the same way I've got his back."

Afterward, Smith apologized to Walker, saying he didn't mean to push him that hard.

"He just saw a screen and his responsibility was that side, so he was trying to make a play," Walker said.

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Just a couple plays later, running back Michael Robinson went down with a right knee injury when he got tangled as he ran into the line. It looked as if he ran up the back of one of his offensive linemen while Dontarrious Thomas hit the lineman and moved him back. Robinson's knee twisted awkwardly and he went to the turf.

He remained down for a couple minutes before getting up and walking off under his own power. The injury is not expected to be serious, and Robinson was relieved after admitting to be quite scared when the play occurred.

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Bryant Young and Trent Dilfer were in the locker room today. Dilfer, ESPN's newest analyst, was watching practice. Young said he is interested in becoming a coach. He ruled out a return.

"No Brett Favre," he said.

Young said he passed a major hurdle in his retirement on Friday when he watched training camp practice from the sideline and didn't feel an overwhelming desire to suit up and play.

He said it was nice to go on vacation recently and not worry about what he could eat or how he'd find a gym the next day for a workout. Young said he's considering coaching. He realizes that would have to be a family decision because of the long hours involved. However, Young said anybody who wants to be good at anything is going to have to devote a lot of hours to anything.

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CB Walt Harris was held out of practice to give the veteran some rest. WR Arnaz Battle is nursing a hamstring strain, so he'll take off practice from time to time. (Battle practiced this morning.)

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The QB competition continues. Hill throws higher percentage passes than Smith, who seems more apt to try to get the ball down field. Regardless, it was a good day for Hill. He completed his last eight passing attempts in 11-on-11 work.

For the morning session, Hill completed 11 of 14 passes, while Smith completed 8 of 14. There were no interceptions during team work.

However, Smith threw one pick to Keith Lewis in 7-on-7. The best play of 7-on-7 was a 50-yard pass from Hill (showing some arm) to rookie Josh Morgan against the defense of Spencer and Michael Lewis.

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In one-on-one pass blocking drills, Eric Heitmann (vs. Ronald Fields) and Jonas Jennings (vs. Isaac Sopoaga, and later against Brandon Moore and Parys Haralson) looked very good. Kentwan Balmer ripped past Jeb Terry.

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There is competition at the wideout spots. The competition right now is for spots on the team. As Mike Nolan said, the question is who are the five receivers? And, then, do they have a sixth who should make the squad.

My opinion: Josh Morgan makes the team. But Ashley Lelie better get back in a hurry or he's going to have a difficult time making the final roster.

Morgan continues to shine. When asked what kind of impression he's making, Morgan answered, "I'm not sure -- hopefully a good one."

He's getting a lot of reps and -- to the untrained eye -- does not appear to be doing much wrong. Seems like he has a decent grasp of the offense and he's catching most everything in sight.

As for the starting two receivers . . . well, it might be the starting THREE receivers (Isaac Bruce, Bryant Johnson and Arnaz Battle). Or the starting TWO tight ends (Davis and Walker).

Don't expect the 49ers to use a fullback much as they try to get their best 11 players on the field. Delanie Walker is looking very good. He considers himself an H-back, which entails being a tight end, slot receiver and fullback.

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OK, that's it for now.

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