Cabrera carded 69 and is tied with Brandt Snedeker (70) and Jim Furyk (71) in fourth, two shots behind Day. Adam Scott (72), Dufner (69), and Lee Westwood (71) are included in the group at 3 under.
They’re all chasing Day, who admits carrying a patriotic burden into the weekend.
“Obviously there’s a lot of pressure on my shoulders, being from Australia and no Australian has ever won the event,” Day said. “I’ve just got to get that out of my mind and plug away.”