BARCELONA, Spain � Rafael Nadal won his fourth straight Barcelona Open title with a 6-1, 4-6, 6-1 victory over second-seeded David Ferrer in the final today.

Nadal's 21st straight win at the tournament improved his record to 20-1 in clay court finals, including 4-0 at Barcelona. The second-ranked Spaniard, who has won 103 of his last 104 matches on clay, improved to 25-8 in finals overall.

Nadal moved to 6-3 against the fifth-ranked Ferrer, whom he beat on his way to a fourth straight trophy at Monte Carlo last week. The three-time French Open champion will go for a fourth straight Masters Series title in Rome, starting Monday.

Nadal took the lead from the first game with a break of Ferrer's serve thanks to a backhand passing shot.

Ferrer fired a crosscourt forehand out to give Nadal a second break point and a 3-0 advantage. Ferrer finally held in the fifth to trail 4-1.

Ferrer steadied himself in the second set to put Nadal on the defensive. A screeching forehand set up a double break-point chance in the sixth but Nadal saved to trail 4-3.

After trading breaks, Ferrer went back to the steady forehand for the winner that snapped Nadal's 25 set-winning streak here.

Nadal regained control in the decider with a break in the second game for a 2-0 lead, and another break in the fourth at the seventh all-Spanish final at Barcelona.