Pegasus World Cup (G1) morning line favorite Disco Time is not the only budding star older horse competing at Gulfstream Park on Saturday.

Fionn got back on the winning track Saturday at Aqueduct, surging inside the final furlong to overtake even-money favorite Laurelin in the $350,000 Jockey Club Oaks (G3).

A trio of three-year-old fillies who endured upset losses last month at Keeneland will look to rebound in two different graded stakes on Saturday.

If success versus division leader Nitrogen is the key factor, Fionn looms as the horse to beat in the $800,000 Queen Elizabeth II Challenge Cup (G1) at Keeneland on Saturday.

What could prove to be an especially fruitful summer at Saratoga for the three-year-old filly Nitrogen continues on Saturday when the rising star looks to capture her sixth stakes win in a row in the $500,000 Belmont Oaks (G1) over nine furlongs on the turf.

Mercante continued his upward trajectory by upsetting Brilliant Berti in Saturday’s $273,500 Arlington (G3), one of three turf stakes on Stephen Foster Preview Day at Churchill Downs.