Thomas, a fourth-year defensive back, was coming off a 2010 season in which the New York defender finished with career-highs in tackles (81 total) and forced fumbles (four), as well as a career-high-tying five interceptions.
Thomas was injured inside the two-minute warning after being inadvertently leg-whipped by Giants defensive end Jason Pierre-Paul as both applied pressure to Bears quarterback, Jay Cutler.
Giants head coach Tom Coughlin confirmed to ESPN after halftime that the team had received, "the worst possible news," and Thomas had torn his ACL on the play despite being able to leave the field on his own power.
Thomas joins Arizona Cardinals running back Ryan Williams, Detroit Lions running back Mikel Leshoure and San Diego Chargers linebacker Stephen Cooper on an unenviable list of players whose seasons were over, effectively, before they even began.
This unfortunate incident just goes to prove, again, that any time NFL players suit up for action they are susceptible to injuries.