UPDATE 2-Soccer-Brazil fight back to sink U.S in superb final

* Luis Fabiano double rescues Brazil

* Skipper Lucio heads late winner

* Holders retain trophy after U.S. take 2-0 lead (adds quotes)

By Mike Collett

JOHANNESBURG, June 28 (Reuters) - Holders Brazil fought back from 2-0 down with three second-half goals to beat the United States 3-2 and win the Confederations Cup for the third time in a superb final on Sunday.

The U.S., who shocked Spain in the semis, looked set to complete an even greater upset when goals by Clint Dempsey and skipper Landon Donovan put them 2-0 ahead at halftime.

U.S. goalkeeper Tim Howard produced several good saves before striker Luis Fabiano took his tournament tally to five when he scored immediately after the restart and headed the equaliser in the 74th minute.

Brazil captain Lucio completed his side's stunning recovery when he rose superbly to power home an Elano corner six minutes from time.

The match was a fitting climax to an outstanding tournament which provided shocks, excellent football and passionate crowds, auguring well for next year's World Cup finals in South Africa.