The 33-year-old Mallinger had a 15-under 198 total at CordeValle after opening with 66 and matching the course record with 62 on Friday.
“I just didn’t have it all. I didn’t drive it as well as I did yesterday,” Mallinger said. “I think I hit every fairway yesterday, and then today I just got off to a weird start. But I hung around there and made some birdies on the back nine that got me back into position. Still got lead, still got a good spot, and look forward to tomorrow.”
He has finished second twice in his seven-year career on the tour, losing in a playoff to Bo Van Pelt in Milwaukee in 2009.
“I’m going to still stay aggressive and try to make as many birdies as possible,” Mallinger said. “It’s going to be a birdie day. I mean, it’s supposed to be nice tomorrow.”
Sweden’s Jonas Blixt was second after 66.
Augusta native Charles Howell and Jason Kokrak are three shots off the lead. Howell had 66, and Kokrak shot 67.
“It’ll be a shootout tomorrow,” Howell said. “The greens are so soft and there will be a lot of birdies, but at least I have a chance.”
He won the last of two tour titles in 2007.
CHAMPIONS TOUR: In Conover, N.C., Fred Funk took a one-stroke lead over Augusta native Larry Mize in the Greater Hickory Classic.
Funk shot his second consecutive bogey-free 6-under 66.
The 54-year-old Mize, the 1987 Masters Tournament champion whose lone Champions Tour win came in 2010 in the Montreal Championship shot 67.
Defending champion Mark Wiebe, Chip Beck and Duffy Waldorf are four strokes behing Funk.
Beck and Waldorf shot 67, and Wiebe had a 69.
EUROPEAN TOUR: In Vilamoura, Portugal, Bernd Wiesberger of Austria birdied six of seven holes in one stretch, finishing with 6-under-par 65 for a one-stroke lead after three rounds at the Portugal Masters.
Wiesberger, who started his birdie run at No. 8, is at 13-under 200. He was followed by England’s Ross Fisher, who began the day in the lead and finished with 69.
Ireland’s Shane Lowry (67), England’s Richard Finch (66) and New Zealand’s Michael Campbell (67) were four behind Wiesberger.
Former Augusta State golfer Scott Jamieson shot 68 and is nine shots off the lead. Jamie Elson, another former Jaguar, had 75 and is15 shots off the pace.
WEB.COM TOUR: In Miami, Texan Shawn Stefani has opened up a six-shot lead after 54 holes of the Miccosukee Championship.
Stafani, who won the tour’s Midwest Classic on Aug. 19, shot 9-under-par 62 on Saturday to move to 12-under 201.
The 62 was the day’s low round by six shots.
Alistair Presnell (69 on Saturday) and Christopher DeForest (72) are tied for second place.
Augusta’s Scott Parel shot 72 and is tied for 21st place at 212.
LPGA TOUR: In Kuala Lumpur, Malaysia, defending champion Na-yeon Choi of South Korea posted 3-under-par 68 to maintain a two-shot lead after the rain-interrupted third round of the Sime Darby LPGA Malaysia.
Choi birdied the first hole before rain halted play for more than four hours. She finished with four birdies and a bogey for a 13-under total of 200.
Fellow South Korean Park Inbee is two shots back after putting up the day’s best score of 65, while Karrie Webb of Australia is another two shots back after 68.