PITTSFORD -- With an extended training camp and five preseason games, injuries will continually be a topic to monitor for the Buffalo Bills.
On Monday, rookie receiver Sammy Watkins escaped a serious one when he was poked in the eye. But he wasn't the only player to go down for at least a portion of practice.
Rookie linebacker Darrin Kitchens, an undrafted free agent out of Florida, had to be carted off the field after suffering an apparent left-leg injury during a special-teams drill.
Starting middle linebacker Brandon Spikes left practice midway through and was taken to the cooling tent by trainers. Coach Doug Marrone said afterward that Spikes was suffering from cramps, and that it was too early to tell if he'd be able to practice Tuesday.
Cornerback Brandon Smith suffered a leg contusion after colliding with safety Derek Brim on a play over the middle. Brim, the University at Buffalo product, held on for an interception on the play.
The first scuffle of training camp also took place near the end of the practice on the grass field adjacent to Growney Stadium on the St. John Fisher College campus. Safety Da'Norris Searcy and wide receiver Robert Woods had to be separated by teammates, with Searcy being pulled off to the side for a discussion with defensive backs coach Donnie Henderson.
"Tempers flared out there. I don't like fighting with our guys. I'd rather fight with our guys than against our guys," Searcy said. "We're good. We squashed it. What's out on the field is left out on the field. There's no beef going into the building.
"It's a family. Brothers sometimes fight. ... He didn't want to hurt me and I didn't want to hurt him. We need everybody out here."
Marrone didn't particularly care for the dust-up.
"I just want to go out there and practice and make sure that we're competitive and not combative," he said. "Sometimes it gets a little hot ... and people get a little pissy, but they shouldn't do that. That's not what we're looking for."
Some highlights from the practice:
• During one-on-one drills between defensive backs and receivers, Searcy picked off quarterback EJ Manuel after stepping in front of tight end Scott Chandler. … Receiver Marquise Goodwin badly beat cornerback Ron Brooks for a deep completion from quarterback Thad Lewis. … Marcus Easley made a circus catch of a tipped ball thrown by Jeff Tuel, grabbing it in front of cornerback Leodis McKelvin. ... Watkins easily got past a jam at the line of scrimmage from Watkins for a long touchdown from Manuel.
• The biggest collision of the day was an inadvertent one. Rookie safety Kenny Ladler intercepted a Manuel pass when he stepped in front of receiver Mike Williams, with the two of them going down to the ground after colliding.
• Pass rusher Jerry Hughes continued to build on a strong spring, consistently getting pressure from the edge.