Rafael Nadal beat fellow Spaniard Pablo Carreno Busta 6-3 6-2 to reach his 12th Barcelona Open final.
Victory sets up a re-match with Greece's world number five Stefanos Tsitsipas, who came back from two sets down to stun Nadal in February's Australian Open quarter-finals.
World number three Nadal, 34, has won all 11 previous finals and has only ever lost four matches in Barcelona.
Tsitsipas, 22, beat Italian Jannik Sinner, 19, 6-3 6-3 to reach the final.
Nadal beat Tsitsipas in the 2018 final, losing just three games, although the Greek did beat him on clay in the semi-finals in Madrid in 2019.