[4] In the Groove began her three-year-old season at Newmarket dead heated with heart of joy in the seven furlong Nell Gwyn Stakes, a trial race for the 1000 Guineas.

Sixteen days later in the 1000 Guineas over Newmarket's Rowley Mile the filly started at odds of 11/1 and finished eighth of the ten runners, twenty-two lengths behind the winner Salsabil.

Ridden by Ray Cochrane, she was last of the five runners entering the straight but moved up smoothly to take the lead approaching the final furlong and won by 1+1⁄2 lengths from the odds-on favourite Sardegna.

Ridden by Cash Asmussen, she started second favourite and finished fourth behind Salsabil, Game Plan and Knight's Baroness.

[7] In September In the Groove ran in the Prix Vermeille over 2,400 metres at Longchamp Racecourse in which she finished strongly to take third place, beaten a neck and half a length by Salsabil and Miss Alleged.

Cauthen sent her into the lead approaching the final furlong and she won the race from Terimon, Rock Hopper and the 1990 Epsom Derby winner Quest for Fame.

She started favourite to repeat her 1990 victory in the Champion Stakes but after being hampered in the straight she finished a close third behind Tel Quel and Cruachan.