Armstrong and Ullrich set for time-trial duel
Lastras, of the Banesto team, timed his run to perfection to win the day after featuring in a 16-man breakaway on the 203.5km run from Bordeaux.
The main peloton, including Armstrong and Ullrich, finished more than 24 minutes behind the winners with both men finishing in the same time, the German 24th and the American 45th.