Cornerback Jimmy Smith missed practice due to a back injury suffered during an indoor practice Thursday afternoon.
“Jimmy’s back locked up,” Harbaugh said. “It’s all muscular. It’s something that happened to him in college. It takes a couple of days usually for that to loosen up.”
Defensive end Arthur Jones was out the past two practices with a hip flexor injury. He had a magnetic resonance imaging exam, which revealed no tear and that it’s only a strained muscle.
“He had a hip flexor issue that he’s been fighting through for the last couple of days, so we decided to get it looked at,” Harbaugh said. “Don’t expect it to be serious, but we wanted to check it out and make sure.”
Offensive guard Bobbie Williams (right ankle) returned after missing one day of practice.
Several other players didn’t practice Friday, though. That included Pro Bowl fullback Vonta Leach, who was given a day off due to a tight back. Leach is also the only fullback on the roster.
“I held him out,” Harbaugh said. “His back started to tighten up, too, so I held him out a little bit. That’s part of the camp deal, especially those guys who are a little bit older.”
Also not practicing: linebackers Courtney Upshaw (right shoulder), Terrell Suggs (partially torn Achilles tendon), Josh Bynes (undisclosed) and Dannell Ellerbe (undisclosed), cornerbacks Cary Williams (hip) and Asa Jackson (undisclosed), tight end Dennis Pitta (broken right hand), offensive lineman Jah Reid (strained right calf), wide receivers Tandon Doss (hamstring), David Reed (ACL surgery) and Patrick Williams (undisclosed), and running back Bernard Pierce (strained hamstring).
M&T TODAY: The Ravens have an open practice today at M&T Bank Stadium at 5 p.m. with gates opening at 3:30 p.m.
“It’s a practice, yes, but it’s a ramped-up environment,” Harbaugh said. “Last year, some of our young guys went into that stadium atmosphere, who had been practicing well, and didn’t practice so well. The environment got them. So, it’s a chance for them to get into that different kind of setting.
"It’s a little bit bigger than the practice field out here and perform in that kind of a setting, be able to just take the whole thing, internalize it back to your own performance, cut that crowd out of it and play football.”
QUICK HITS: Former Pro Bowl kicker Billy Cundiff was given the day off. Rookie kicker Justin Tucker made 5 of 6 field goals, coming up just short on a 60-yard attempt. … The Ravens list receiver Jacoby Jones as their top punt returner and kick returner on their official depth chart. … Bryant McKinnie is listed as the starting left tackle and Michael Oher as the starting right tackle. … Special Olympics of Maryland athletes attended the practice. … Pro Bowl offensive guard Marshal Yanda delivered a message to the team. “His words were, ‘Embrace the grind,’” Harbaugh said. “Perfect for training camp, right? He talked about ‘physical’ being the foundation of being a football player and what this football team is all about, and he talked about having fun. It’s a game that we should love. It’s a great game, and we all love it, so even though it’s 105 degrees, or whatever it is, make the most of it and enjoy yourself.”