Buffalo Bills right tackle Seantrel Henderson missed the first day of mandatory minicamp Tuesday, with coach Rex Ryan saying the player had "travel issues."
"You always tell guys, especially when you're heading north ... always try to prepare a little," Ryan said. "I'll talk to him about that."
Henderson is expected to practice Wednesday.
Not taking part in practice Tuesday for various injury reasons were safeties Aaron Williams and Wes Miller, cornerback Cam Thomas, linebacker Tony Steward and guard Chris Williams. Miller and Steward were spotted at the practice riding the stationary bike on the sideline.
Receiver Sammy Watkins took one rep in 11-on-11 drills for the first time this spring, leading defensive backs coach Donnie Henderson to yell out after the play, "Hey Sammy, you working today?"
"He looked good," Ryan said of Watkins, who had surgery on his hip this offseason. "He's right where we want him to be. By training camp, we expect him to be ready to roll."
The same goes for the rest of the Bills' injured players, with the possible exception of Chris Williams.
"I'm not real sure right now," Ryan said when asked if Williams would be ready to play when the Bills report to St. John Fisher College in Pittsford. "Our trainers will obviously let me know as he does his physical and things like that."
Earlier this offseason, Ryan said he "doesn't even know what he looks like," about Williams, indicating a level of frustration with the player for avoiding the voluntary organized team activities.
"I know what he looks like now," Ryan said Tuesday. "That is good. He's a big dude. ... My conversation I'll just leave as a private conversation with Chris. They are voluntary camps. ... Obviously we knew Chris' situation with his rehab and things. Like I said, I know what he looks like now."