India's middle-distance runner Tintu Luka produced her season's best timing of 1:59.69secs in the women's 800m semi-finals but it was hardly enough to give her berth in the final of the event at the London Olympics on Friday.
The 23-year-old Kerala runner did reasonably well compared to some other Indian athletes who have been terribly disappointing, but lacked firepower to beat some of the best athletes in the world.
Luka initially tried to match her fancied opponents and maintained fourth position, but gradually dropped behind and eventually finished sixth in the second semi-final.
The Indian did not have enough stamina to go all out in the home stretch unlike the others who put in a lot in the final burst.
Luka improved upon her season's best timing of 2.01.09s, but it was well behind her personal best of 1:59.17s.
She had qualified for the women's semi-finals on Thursday after finishing third in heat two, clocking 2:01.75s.
South Africa's Caster Semenya qualified for the final from heat two with a season's best effort of 1:57.67secs along with Russia's Elena Arzhakova (1:58.13s).
The top two in each of the three heats and the two fastest losers advanced to the final.