Anquan Boldin SF 49ers training camp 2013A few notes from Friday evening’s practice, the first for new 49ers wide receivers Austin Collie and Lavelle Hawkins.

— Anquan Boldin simply doesn’t drop passes, and he continues to find seams. Refs were here today, and during one-on-one drills early in practice Boldin took advantage of their presence with a nifty move where he juked left and then went right as he gave Tramaine Brock a nice shove to the left with his right hand. As Brock clung to Boldin to avoid losing him, a flag flew. Brock was shocked when called for pass interference, but let’s face it — if he faces receivers at Boldin’s level during the season he won’t get any calls then, either.

— Boldin also caught probably the nicest ball of the day which was thrown by … Scott Tolzien, interestingly enough. Tolzien has generally looked pretty mediocre throughout the offseason, but threw a nice bullet between the hashes about 20-25 yards downfield near the end of the session.

— Imagine if the 49ers didn’t trade a 2014 sixth round pick for Boldin. Frightening.

— Brock made up for his penalty when 11-on-11 drills started about 10 minutes later, intercepting Colt McCoy.

— Nnamdi Asomugha played a lot with the first team at corner, as Tarell Brown stood and watched from the sideline. Asomugha didn’t give up any big plays and dropped a possible INT that would’ve resulted in an easy touchdown the other way. That was Colin Kaepernick’s only misstep on a day where he looked sharp (as usual).

— Kaepernick also drives a nice white Jaguar. I’m usually not a fan of white cars, but I’d make an exception in this case. Big of me, I know.

— Mike Iupati hobbled off with what looked to be some left knee pain, but after flexing the knee for a while on the sideline he was later seen joking with his teammates, chatting with Aldon Smith (who didn’t practice) and eventually getting back in and playing near the end of practice.

— Collie and Hawkins both caught short passes during 11-on-11 work; Hawkins caught a long wobbler from B.J. Daniels, only he was a good two steps out of bounds. That didn’t stop Hawkins from pleading with a nearby referee, pointing at a spot just inside the sideline and saying, “Look at the toe mark!”

— C.J. Spillman had a nice deflection on a pass Kaepernick threw to Vernon Davis.

— Eric Reid worked a lot with Donte Whitner today, with Craig Dahl paired up with either Spillman or Trenton Robinson.

— Kaepernick sounds like he’s spent a portion of time this offseason working on his snap counts — namely, getting people to jump. He got the entire defense to jump at one point, but his cadence also caused a false start by WR Marlon Moore.

— Earlier today I wrote about Bruce Miller perhaps getting more involved in the passing game. He caught a short pass from Kaepernick early on but then dropped a 15-yard pass over the middle. Miller was angry and said some naughty words afterward.

— There was a pretty loud collision between Jewel Hampton and Corey Lemonier on an off-tackle running play. Neither player looked any worse for wear, but the sound caused everyone in the media to let out an “Oooohhh…”

— No Patrick Willis sighting, and NaVorro Bowman watched practice. No surprises there. Justin Smith watched from the sideline. Ricardo Lockette was inactive, and A.J. Jenkins worked out with Kyle Williams in the conditioning area (I didn’t see Kassim Osgood, but he may have been in the weight room). Jonathan Goodwin was also a spectator.

— Daniels returned kicks and got most of the QB reps near the end of practice. The 49ers definitely seem like they’re invested in their seventh round pick and hopes he succeeds … but at which position(s)?