Career
He represented Spain at the Olympics in 1996 and 2000 and was the bronze medallist over 1500 metres at the 1999 IAAF World Indoor Championships. His personal best outdoors is 3:31.48 minutes, but it was indoors where he excelled – his time of 3:33.32 minutes is the current European indoor record. His first international appearances came in 1995, when he reached the semi-finals of the 1995 IAAF World Indoor Championships and ran in the heats of the 1995 World Championships in Athletics.
His Olympic debut came at the 1996 Atlanta Olympics, although he was knocked out in the first round of the 800 m.
He narrowly missed out on a medal at the 1996 European Athletics Indoor Championships, coming fourth. Díaz changed his focus to the 1500 metres from 1997 onwards and he knocked more than six seconds off his personal best that year, setting a time of 3:34.52 minutes.
He reached the 1500 m final at the 1997 IAAF World Indoor Championships and finished in fifth place. A consecutive fourth-place finish at the 1998 European Athletics Indoor Championships saw him again outside of the medals on the major stage.
A surprise European indoor record for the 1500 m came at a meeting in Piraeus in February 1999 as he bettered Peter Elliott"s record by over second with a run of 3:33.32 minutes.
He ran another fast time at the 1999 IAAF World Indoor Championships the following month, just a little slower than Elliott"s former record, but was beaten by Haile Gebrselassie and Laban Rotich, taking the bronze medal for his first podium finish on the major stage. The 1999 World Championships in Athletics in Seville saw Díaz, alongside Reyes Estévez and Fermín Cacho, vying for the 1500 m medals on home turf. In the fastest race ever seen at the competition, Díaz ran a personal best of 3:31.83 minutes but he ended up behind his compatriots with a fifth-place finish.
On his second outing on the Olympic stage he reached the 1500 m, taking seventh at the 2000 Sydney Games.
After this performance he ran the best 1500 m of his career at the Herculis meet in Monaco, completing the distance in a time of 3:31.48 minutes. His last appearance on the world stage came at the 2001 World Championships in Athletics, but he did not manage to finish in his heat.
He retired in 2003.
