Competing against eight of the best international gymnasts, Dalton won the floor, rings, vault and high bar titles in addition to the all-around crown.
A letter winner at OU from 2010-12, Dalton's all-around score was over two points higher than Ukraine's Oleg Verniaiev, who finished second. Dannell Leyva, the only other U.S. gymnast selected to compete, finished sixth with an 85.265.
"It feels great to win the AT&T American Cup - it's good to get back into routine mode and hit all my routines," Dalton said. "Start value and consistency are my focus - I want to be the one to count on when I go out there and compete."
It was the first World Cup all-around title for Dalton, who has been a member of the U.S. senior national team since 2009.
"Jake had a wonderful performance today," OU head coach Mark Williams said. "Winning four events on the way to the all-around title is very impressive when competing against the world's best. I'm very happy for Jake."
Dalton opened with a strong performance on floor, where his Arabian double layout mount and triple full dismount resulted in a score of 15.700. His meet-high score was the first of four event titles.
On pommel horse, Dalton scored a 13.333. He finished seventh on the event, but quickly recovered with a 15.166 on rings and another event title. His routine included a Maltese press to planche to Azarian iron cross and a double twisting double tuck dismount.
Dalton's Kasamatsu double full on vault scored a 15.433, a high score on the apparatus. After four rotations, Dalton had a 0.500 point lead heading into the final two events.
A 15.033 on parallel bars was the second-highest score on the event, but it was good enough for Dalton to maintain his all-around lead with one rotation remaining.
Dalton finished off the competition on high bar, where he won his fourth event title. His double twisting double layout dismount scored a 14.733 to seal the victory. (More at SoonerSports.com)