Minicamp Notes Day 1: Smith gets stepped on

Aldon Smith ended up leaving practice with a very minor foot injury, plus a few other notes and observations from Tuesday's minicamp practice.

SANTA CLARA, Calif. - The San Francisco 49ers decided to hold all three of their minicamp practices this week inside Levi's Stadium instead of their practice facility next door.

"We'd like the stadium to feel like something old us, so we're going to practice in the stadium," head coach Jim Tomsula said. "We're going to take advantage of that. We'll do some more of that in camp ... Obviously, the wind, the sun, those different things. Just being in our building. We'd like to make a new building an old building or us."

A new field was installed last month to accommodate an MLS game, and the grass appeared to hold up well, which is notable considering all the issues the team had last season. This year, the playing surface should be aided by an improved base layer underneath the sod. There were no apparent injuries Tuesday as a result of a bad field.

Some more notes from practice:

--Undrafted rookie receiver DeAndrew White (Alabama) has emerged as the favorite target among the team's group of five undrafted receivers. He made catches both short and long Tuesday, and has gained the trust of all three quarterbacks in camp.

White high-pointed a Colin Kaepernick throw nicely in full-team drills, landing between three defenders. He was also regularly open in underneath routes. White ran a 4.44 at the February's scouting combine and is smooth in and out of his routes. He will be an intriguing player to watch come training camp.

Dres Anderson, another undrafted free agent from Utah, also had another strong showing Tuesday.

--Outside linebacker Aldon Smith had his right foot stepped on, and missed the second half of Tuesday's practice. Smith was given an ice wrap for his foot and was replaced by Corey Lemonier at weak side outside linebacker. The injury does not seem serious.

--The first-team defense:

Left end: Glenn Dorsey
Nose tackle: Ian Williams
Right end: Quinton Dial
Strong side OLB: Ahmad Brooks
Weak side OLB: Aldon Smith
Mike ILB: NaVorro Bowman
Jack ILB: Michael Wilhoite
Strong safety: Antoine Bethea
Free safety: Eric Reid
Left cornerback: Dontae Johnson
Right cornerback: Keith Reaser

Tramaine Brock did not participate in full-team drills, while Chris Cook and Marcus Cromartie received most of the reps behind the starters.

--The rotation among offensive linemen was surprising. The starters:

Left tackle: Joe Staley
Left guard: Andrew Tiller
Center: Joe Looney
Right guard: Marcus Martin
Right tackle: Erik Pears

Brandon Thomas and Alex Boone worked with the second unit, playing right guard and left guard, respectively. That was a surprise given Thomas came into the offseason as the favorite to replace Mike Iupati at left guard and Boone having started at right guard during since 2012.

The lesson: expect this rotation to change throughout the week as Boone works his way back into the offense and starts competing for the right tackle spot. Perhaps the 49ers are working Martin and Thomas at right guard to brace for Boone's pending move to right tackle.

--Anquan Boldin was back with the team for the first time this offseason and saw the play book for the first time this week.

He was not given the new playbook earlier this spring because of Tomsula's policy.

"You have to be here to get a playbook," Tomsula said. "Any of those guys that have been training away from here, they get here, they get brought up to speed and going that way."

In practice, Boldin didn't appear to have any trouble running the offense.

Play of the Day:

Receiver Torrey Smith, who signed a five-year, $40 million free agent deal in March, made a strong grab on a deep corner route toward the left boundary. Kaepernick threw a perfect deep touch pass, over a defender, allowing Smith to make the grab while sliding a second foot in bounds (although I didn't have the benefit of replay).

Follow Chris Biderman on Twitter.

Next story:

Boone easing into right tackle competition

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