Postell was 7-0 this season and is chasing Suzanne Metz's 11 wins for the school record for most in a season. Postell already owns the school record with 26 career wins.
The senior, who suffered her first falls last week against Oregon State when she came off the uneven bars and balance beam, did win the vault with a 9.95 for her seventh vault title of the season.
Postell took a big step on her bars dismount Friday and earned a 9.775, scored a 9.9 on the floor and finished up with a 9.8 on the balance beam for a routine that included a big wobble.
"I'm pleased with what she did," Utah coach Greg Marsden said. "She seemed a lot more relaxed than she was last week. I know she wasn't pleased with her beam routine, but she knows she can do better."
The all-around title went to Florida's Amanda Castillo with a 39.625. She was followed by teammates Melanie Sinclair (39.575), Corey Hartung (39.5) and Ashley Reed (39.45).
In failing to win the all-around, Postell succeeded in helping a Gator streak continue as a Florida gymnast has won the all-around in every meet this season.
One of the gymnasts who was most relieved with Utah's performance was Daria Bijak, who had a 39.275 in the all-around that included a 9.875 on the floor.
"I was happy to be back," she said. "We had a tough meet last time and we did a good job tonight, a lot of good things."
The Utes didn't know how well they'd like Florida's floor, but it at least met Bijak's approval as she had one of her cleanest routines.
"I loved it," she said. "Their carpet was really bouncy and I felt like I could go full speed."
Kyndal Robarts' 9.9 on the vault tied her career high. . . . Annie DiLuzio had a 9.85 on balance beam for a career high. . . . Former Utah president Bernie Machen, now the president at Florida, attended the meet. Florida football coach Urban Meyer met with Marsden briefly Friday but didn't attend. . . . The Gators used five all-around competitors for the first time since 1994.