"It's more than that," Coughlin said after Sunday's practice on his disappointment in the injury. "We're trying to put a team together. We saw too much of that in the spring."
Beckham missed some of the team's OTA and minicamp practice earlier in the preseason because of the hamstring injury. He was ready to work when training camp began last week, but after feeling a tweak on Tuesday has not practices since.
Despite the injury, the wide receiver fielded some punts in special teams drills on Sunday, but did not run after catching the ball.
"He actually looks pretty good out there moving around," Coughlin said. "We just hope it's a real short period of time."
Though Coughlin is frustrated with the injury, he's not frustrated with Beckham, himself saying he understands the necessity of protecting his health.
"We're not going to let him go if he's in danger of hurting himself. That's all there is to it," Coughlin said. "I can stand here and fight all I want. It's not going to matter."