text: EAST RUTHERFORD, N.J. (AP) — Eli Manning understands the concern about the New York Giants' offense with the regular season three weeks away.
  NOTES: While he did not practice, starting CB Prince Amukamara is cautiously optimistic his groin injury suffered Saturday is not serious. ... MLB Jon Beason (broken right foot) is not sure he will be allowed to play in the preseason, but he intends to be ready for the regular-season opener. He was injured in the veterans minicamp in June. ... It appeared that Beckham aggravated his hamstring in practice, but Giants general manager Jerry Reese told team spokesman Pat Hanlon the rookie was OK. Coach Tom Coughlin was caught off-guard when asked about Beckham and smiled at Hanlon when told about Reese's comment. "Why would I need information like that?" Coughlin said. ... Besides Amukamara, RB Peyton Hillis (ankle/foot), CBs Jayron Hosley (foot) and Ross Weaver (ankle), TEs Kellen Davis (Achilles strain) and Xavier Grimble (hamstring) and OL Charles Brown (shoulder) and James Brewer (back) did not practice.