Kuchar and English were 20 under the Ritz-Carlton Golf Resort's Tiburon course. They opened with a 64 on Friday in modified alternate-shot play. The team event ends Sunday with a scramble.
Kuchar and English had nine birdies and an eagle on Nos. 8-17.
"It's pretty cool," English said. "You just kind of get on a hot streak and you don't really think about anything other than making birdies.
They had a chance for a 59, but Kuchar's 14-foot putt on 18 missed to the left.
Goosen and Jacobson had five straight birdies on Nos. 3-7 and row in a row on Nos. 14-17..
"Overall, not too bad, but yeah, four shots behind tomorrow, we need something really low," Goosen said.