Also known for his sensational one-handed catches and wild hair styles, Beckham caught 101 passes and scored 10 touchdowns last season.
At first glance, the injury looked a lot worse than just a sprained ankle. McAdoo said both players will be evaluated day by day based on how they respond to treatment.
Beckham also didn't seem to think there was any doubt he would be ready for the season opener in 19 days on September 10 against the Dallas Cowboys.
Quarterback Cam Newton and wide receiver Curtis Samuel, the team's rookie second-round draft pick, are on pace to play Thursday night against the Jacksonville Jaguars after missing the first two preseason games rehabbing from injuries.
"I don't know. I'm pretty concerned", Beckham said with a smile, "but I think I'll be all right".
Beckham was taken for X-rays on the ankle, which were negative, the team said. The Giants had been given a leg up in that opening game after the six-game suspension of Cowboys' running back Ezekiel Elliott.
"You have your players crying out for help. That's a medical decision".
Cornerback Michael Hunter, who received substantial early playing time because Eli Apple has been sidelined with an ankle injury, is in the National Football League concussion protocol. "Got a scan. We got an ankle".
Several Giants players believe the injury would have been far more extensive had the play happened on turf, rather than real grass, which allowed for Beckham's left foot to move rather than stick on contact.
"I'm just thinking hit him low, make sure I don't get no fine or nothing", Boddy-Calhoun explained.