Mare gives Kavanagh headache he is happy to have High expectations: Trainer Mark Kavanagh with champion racehorse Atlantic Jewel. Unbeaten Atlantic Jewel is making Mark Kavanagh's job harder with every seemingly effortless gallop. "I like to underpromise and overdeliver," Kavanagh said. That is getting a bit hard with her now. Atlantic Jewel is a five-year-old mare which has been restricted to only seven runs because of injury caused by her freakish power. The daughter of Fastnet Rock showed she had lost nothing in her 16-month lay-off when she led and ran 46.10 seconds for an 800-metre jump-out at Flemington on Friday. She got home her final 400m in 21.68s, usually a time that would have clockers checking their watches, but with her it is just expected. Kavanagh and his stable jockey Michael Rodd know the pressure will only build from here. "If she gets beaten it won't be her fault, so I have to be doing everything right," Rodd said. She is a lot more mature and she is fantastic. She has never led in a trial and she did it on her ear. I gave her a little squeeze and she did it within herself. About the slick time, Rodd added: "I gave away being shocked by her a long time ago. She has the biggest stride of any horse I have ridden and it all seems so easy. Kavanagh will make a decision on a start in the next week or so. Atlantic Jewel could attempt to add another group 1 to her triumphs in the Thousand Guineas and All Aged Stakes - her most recent race-day appearance - in the Memsie Stakes at Caulfield in a fortnight's time. The easier option is to wait for the Let's Elope Stakes on her home track of Flemington on September 7, however, that could compromise her program for later in the spring. "She is showing she might be forward enough for the Memsie and that opens up the options for her," Kavanagh said. She has been out for 16 months but we have had her back in work for six months and we want to get this right, so we will have a look at her next week before doing anything. Running in the Memsie would allow her to go to [Moonee] Valley and get an extra run [in the Dato Tan Chin Nam Stakes over 1600m on September 14] before the Underwood [a week later]. The main goal for Atlantic Jewel is the Cox Plate on October 26.