Mission Brief beat Danielle Hall by 4 3/4 lengths in 1:51 4/5 for the mile, slicing a full two seconds off the mark set by Shake It Cerry last year.
Mission Brief took charge down the backstretch and was in full command in the stretch with Yannick Gingras driving for trainer Ron Burke.
"The talent this filly has is unbelievable," Gingras said. "As long as she stays sound, she’s going to do amazing things.”
Mission Brief improved to 9 for 13, paying $2.80 to win for Burke Racing, Our Horse Cents Stables, J & T Silva & Weaver Bruscemi.