OWINGS MILLS -- Baltimore Ravens Pro Bowl defensive tackle Haloti Ngata and veteran offensive tackle Bryant McKinnie passed a mandatory conditioning test and were activated to practice.
Both are in full pads and participating in practice.
Offensive guard Bobbie Williams (right ankle) also returned to practice.
The following players aren't practicing so far today: fullback Vonta Leach, cornerback Cary Williams, cornerbacks Jimmy Smith and Asa Jackson, defensive lineman Arthur Jones, outside linebacker Courtney Upshaw (right shoulder), tight end Dennis Pitta (broken right hand), wide receivers David Reed (knee surgery), Tandon Doss (hamstring) and Patrick Williams, linebackers Dannell Ellerbe and Josh Bynes and Terrell Suggs (Achilles tendon surgery), offensive lineman Jah Reid (strained right calf), running back Bernard Pierce (hamstring) and center Matt Birk.
This is the fifth day in a row that Birk has missed. Supposedly, he's being rested because he's 36 years old.
"Praise God I'm back 2 good health & Haloti & I ran & passed the condition test this morning," McKinnie wrote on his Twitter account.
McKinnie had been on the non-football injury list with a lower back injury he said he incurred in a slip-and-fall at his South Florida home and was held out of a minicamp this spring and told to get down to a target weight of 345 pounds.
McKinnie was initially placed on the reserve/did not report list after not showing up last week for training camp.
"Like I said many times, I do believe he is a hard worker," Ravens coach John Harbaugh said earlier this week after McKinnie reported "I do believe he is working hard. But he's not ready to practice yet."
Ngata was noticeably heavier than last season during a minicamp and injured his hamstring during his first attempt at the conditioning test.
"We're probably working him a little slower than he'd like us to," Harbaugh said of Ngata. "He's starting to run now and I think he's going to be fine very soon."