Nuts and Bolts of Friday's practice:

• The players were back out on the field on Friday morning after having Thursday off
• They were in full pads and had two different "fully live" periods of practice
• It was "Social Media Day" at training camp on Friday; check out @Chiefs for pictures and info
• OL Garrett Frye (knee), WR Armon Binns (knee), TE Ryan Taylor (quad) and DL Nick Williams (concussion) all left practice early with injuries
• Here's a **FULL INJURY REPORT**
• After being overcast for much of the morning, the temperature seemed to jump about 10-15 degrees the last 45 minutes or so of practice when the sun came out
• NFL Network's LaDainian Tomlinson and Jeffri Chadiha were at Chiefs camp practice on Friday
• Offensive coordinator Doug Pederson, quarterback Alex Smith, safety Husain Abdullah and linebacker Dee Ford spoke with the media after practice
• Saturday's practice is "American Family Fun Day" at Chiefs camp; find all the details at http://www.kcchiefs.com/trainingcamp/index.html

Top Plays from Friday's practice

Here are a few video clips some of the best plays at practice on Friday:

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Player Spotlight – Safety Husain Abdullah

There were only two players on the Chiefs defense that finished the 2014 season with more snaps than safety Husain Abdullah's 1,025, and that was cornerback Sean Smith (1,037) and linebacker Justin Houston (1,033).

Abdullah couldn't often be found in the same place twice, working as defensive coordinator Bob Sutton's personal chess piece in the defensive backfield.

On one play, he'd be lined up in the box as a linebacker and then the following play he'd be 20 yards deep from the snap at a traditional safety spot.

"It doesn't get boring," Abdullah said of moving around to different spots. "I always have to be in tune with the game and the game plan because any given second I could be doing the same thing defensive lineman Allen Bailey, linebacker Tamba [Hali], safety Eric Berry or cornerback Sean Smith is doing.

"So for me, I'm always focused into the game plan."

Whether he's at the line of scrimmage or playing deep, Abdullah has developed into a quiet leader for this Chiefs defense.

He's entering his third year with the team after playing the first four years of his career with the Minnesota Vikings (2008-11). He sat out of the 2012 season as he and his family took a pilgrimage to the holy city of Mecca for The Hajj—the Fifth Pillar of Islam.

But Abdullah would soon return to football.

He signed with the Chiefs before the 2013 season and at the time, he was strictly learning the free safety position.

"At first it was like, alright, just learn the free safety position," he explained. "Then it was strong safety, dime and nickel. Now I've got to learn what the tackles, ends and corners do.

"So being in year three, we can get into even more advanced defenses."

One of the defensive highlights of the 2014 season was Abdullah's interception return for a touchdown against the New England Patriots on Monday Night Football. It was one of just six interceptions by the Chiefs defense in 2014, which tied for last in the NFL.

It's an area the Chiefs defense is working on during training camp.

"You have to be calculated," Abdullah explained of turnovers. "We have certain plays that Al [Harris] or Emmitt Thomas will say, 'If they come out in this formation, we've got to go steal this route.'

"We have our chances, we just have to be in tune with everything and capitalize."

One player who might help in this area is rookie first-round pick, cornerback Marcus Peters, who has had a knack for making plays at camp already.

"To be honest with you, that kid's a future star," Abdullah said of Peters. "He came down here and he probably has five or six interceptions in camp already and a countless number of breakups. So we're fortunate to have him come into our group.

"We have a group where we genuinely like one another. We talk about stuff outside of football and so to have Peters come and just fit right in, it's going to be fun to see how we progress throughout the season."

Led by Abdullah and company, the defensive backfield is hoping to capitalize on their success in 2014, which saw them rank No. 2 in the NFL in pass defense by allowing just 203 yards per game through the air.

For all training camp information, check out KCChiefs.com/trainingcamp.