London 2012 Olympics: Jessica Ennis frustrated with poor high jump display in final heptathlon warm-up The one consolation was that her principal rivals, Russian world champion Tatyana Chernova and Ukraine's defending Olympic champion, Nataliya Dobrynska, also struggled in the high jump, with both clearing only 1.82m. It meant that after the first two of the seven events, Ennis enjoyed an overall lead on 2,194 points, from New Zealand's Sarah Cowley who is on 2,095 points. With the shot put and 200m still to come on Saturday, Ennis remained positive about her prospects, however. She said: "It was a good hurdles performance - my best ever in a heptathlon - so I was pleased with that. But I was just so disappointed with my high jump. It should be way better than that so it's just frustrating. But I jumped 1.86m when I scored my personal best [in Barcelona in 2010] so I've still not lost too much and Dobrynska and Chernova didn't jump too well either, so there's a little positive to take from it. But I'm still disappointed. The meeting in Goztis is the main Olympic dress rehearsal and Ennis's only full heptathlon before the Games open in two months' time. After surrendering her world outdoor and indoor titles in the past year, she is hoping to reassert her dominance, though she will need to avoid any further mishaps if she is to return to winning ways.