In 2022 he won the Risen Star, Louisiana Derby, Jim Dandy and Travers Stakes.
He was sired by Not This Time, a graded stakes winner who finished second in the 2016 Breeders' Cup Juvenile before his career has cut short by injury.
[5] Epicenter made his first start on September 18, 2021, in a maiden special weight race at Churchill Downs over seven furlongs.
[6] He returned on November 13 in another maiden special weight at Churchill Downs, this time at a distance of one mile.
He vied for the earlier lead with Surfer Dude, then kicked clear in the stretch to win by 3+1⁄2 lengths.
He pressed the early pace while racing two wide, then moved to the lead at the top of the stretch and won by 6+1⁄2 lengths.
[8] "To be able to win the inaugural running of the Gun Runner today is special for us," said Scott Blasi, Asmussen's assistant trainer.
"Gun Runner had his start and a number of breakout performances here at the Fair Grounds, and to see what he has done in the stallion barn has been historical.
Geared down for the final strides, he won by 2+3⁄4 lengths over Smile Happy, with Zandon closing for third.
On the final turn, he moved to the outside and began closely steadily, striking the lead near the head of the stretch.
[15] Epicenter broke slowly and settled in mid-pack behind a very fast pace set by Summer is Tomorrow and Crown Pride.
Still in seventh place after three-quarters of a mile, he began to make up ground along the rail near the top of the stretch.
[19] The Travers Stakes on August 27 attracted a very strong field, including the top three finishers in the Kentucky Derby (Rich Strike, Epicenter, and Zandon), Preakness winner Early Voting, and Cyberknife, who had won the Haskell in his last start.
He continued to draw away down the stretch to win by 5+1⁄4 lengths over Cyberknife, with Zandon in third and Rich Strike fourth.
He was away cleanly and thought he was very comfortable and attending close enough to the pace, and just ran a very dominating performance against a very good group.
[24] On November 6, Asmussen confirmed that Epicenter would be retired from racing, adding that the surgery was successful and the prognosis for him to stand at stud was good.