Mark Calcavecchia checked the forecast on his iPad on Saturday morning and immediately knew the second round of the 3M Championship would become a birdie binge.
Virtually no wind combined with soft greens from Thursday's rain rendered the TPC Twin Cities defenseless against the best senior golfers.
The TPC produces double-digit red scores every year, even if the wind blows. But under ideal conditions like Saturday?
Go low, or go home.
"You know you need to shoot 67 or better every day to have a chance at the end," Calcavecchia said.
The scores Saturday were historic. The second-round scoring average was 67.883, the lowest single-round average ever for a Champions Tour event.
Calcavecchia figured he needed a 66 — at minimum — to gain any ground after a ho-hum 70 on Friday.
"You might even lose ground shooting 3 under," he said.