Giants cornerback Terrell Thomas and linebacker Michael Boley were sent to the Hospital for Special Surgery in Manhattan for tests after suffering injuries Monday. Thomas, who is trying to come back from a torn anterio-cruciate ligament, has re-injured his ACL and likely will undergo an arthroscopic procedure to determine the extent of the injury, according to the Giants. A source told ESPNNewYork.com that it is believed Thomas suffered a partial tear of his ACL, but more will be known after the surgery. Thomas, 27, missed all of last season with the injury, but started 16 games in 2009 and 16 games in 2010, collecting 10 interceptions over those two seasons. Boley had a hamstring injury, although it is not believed to be serious.