His other major runners include Rachel Alexandra, Songbird, Plum Pretty, Bolt d'Oro, Mshawish, Violence, and Vancouver.

Gary Barber, former chairman and CEO of MGM, purchased her for $325,000 and sent her into training with Mark Casse, a member of the Canadian Horse Racing Hall of Fame.

In the seven-furlong turf race, Wonder Gadot stalked the pace set by 32–1 longshot Without a Doubt, overtaking her entering the stretch and drawing away to win by four lengths.

[11][12] The win encouraged her connections to enter her in the Breeders' Cup Juvenile Fillies at Del Mar Racetrack on November 4.

[13] On December 2, she bounced back to win the Demoiselle Stakes on the main track at Aqueduct Racetrack by 3+3⁄4 lengths after stalking the early pace.

"[14] With her record of three wins (each coming on a different track surface) and a third from five starts, Wonder Gadot won the Sovereign Award for Canadian Champion Two-Year-Old Filly.

Although she was winless in her four prep races, she was consistently in the money, finishing second in the Silverbulletday and Fantasy, and third in the Rachel Alexandra and Fair Grounds Oaks.

[1] In the Kentucky Oaks, Wonder Gadot stalked the early pace then dueled down the stretch with Monomoy Girl, closing at one point to within a head of the lead.

Monomoy Girl crossed the finish line a half length in front and the stewards decided to let the results stand.

[17] Prior to the Queen's Plate, Casse opted to put blinkers on Wonder Gadot in order to help her focus after several narrow losses.

He also stated that he was considering running Wonder Gadot in the Prince of Wales Stakes, the second leg of the Canadian Triple Crown, alongside Flameaway, a horse who previously ran in the 2018 Kentucky Derby.

On the far turn, Wonder Gadot began to open up a solid lead and was not seriously challenged in the stretch, winning by 5+3⁄4 lengths over second choice Aheadbyacentury.

Following Wonder Gadot's Prince of Wales win, Casse said the possibility of a Canadian Triple Crown attempt was something he would discuss with Barber.

[23] He stated that his ultimate goal was a rematch with Monomoy Girl before the end of the year and a chance at the Eclipse Award for American Champion Three-Year-Old Filly.

[24] However, on July 28, it was announced that Wonder Gadot would make her next start in the Travers Stakes on August 25, becoming the first female starter in that race since Davona Dale in 1979.

[27] She made her final start of the year in the Breeders' Cup Distaff on November 3, where she set the early pace before tiring in the stretch to finish ninth.

[28] At the Sovereign Award ceremony held in April 2019, Wonder Gadot was named the 2018 Canadian Horse of the Year and Champion Three-Year-Old Filly.