Coach John Harbaugh told reporters that McKinnie, who's listed at 6-foot-8 and 360 pounds, is still too heavy to make it through a whole practice after sitting out the first day entirely.
"He's carrying a little too much weight right now, so with this heat out here right now, it made it tough for him to finish," Harbaugh said. "I know he's been working really hard to get some of the weight off, so he might be a little bit ... he's not eating as much as he would normally, so he's going to have to tough it out. He's going to have to fight through that and get in the kind of shape we need him in and that he wants to be in."
In other news, the Newark Star Ledger reported that free-agent fullback Vonta Leach would choose a team Friday and was leaning toward re-signing with the Ravens.
The Ravens released Leach in June and didn't rule out a reunion if the nine-year veteran didn't find the contract he wanted. Harbaugh didn't completely refute the report, but had no update.
"Nothing new on that," Harbaugh told reporters. "As far as I know, nothing has changed. We're patient about it right now. We haven't forced the issue. We're looking at some of our guys and seeing where we're at with our roster right now, but I believe Ozzie (Newsome) and Vonta are still talking."
Hall of Fame elect Jonathan Ogden spoke to the media on a conference call Friday morning with eight days to go until he's inducted to Canton.
The former Ravens left tackle revealed that Baltimore general manager Newsome, the man who drafted Ogden, will present him at the induction ceremony.
"I chose Ozzie because he brought me in to Baltimore. I respect him, and we work well together," Ogden said. "I could always go talk to him, be honest with him, and he's just one of the people that I really respect in the business. It just kind of made sense to me."
Additionally, defensive tackle Haloti Ngata reported that his knee and overall health are doing well after causing him plenty of problems last season.
"It was great to be able to run for the last month and a half. It was great timing," Ngata told reporters. "Right now, my knee is doing good. I don't have problems after practice, but we will have to see once we start putting the pads on and actually hitting. We'll see where it is, and we'll just go from there."
The Ravens also put their single-game tickets on sale Friday morning ... and they sold out in less than 15 minutes.
Fewer than 1,000 tickets remain for each of the Ravens' two preseason games at M&T Bank Stadium: Aug. 15 against the Atlanta Falcons and Aug. 22 versus the Carolina Panthers.
Tickets can be purchased by calling 410-261-RAVE (7283) or by visiting www.BaltimoreRavens.com or www.ticketmaster.com.