Roberto Bautista Agut needed three sets to defeat Dominik Koepfer on Wednesday and move into the Hamburg European Open quarter-finals. The Spaniard overcame Koepfer 6-3 3-6 6-3 to book his place in the last-eight. Bautista Agut rallied from a break down in the final set to beat the in-form German, and will face Andrey Rublev in the next round.