Watch: Highlights of Dortmund’s pre-season so far!

Dortmund’s summer transfer business – which saw them acquire Mats Hummels, Julian Brandt, Thorgan Hazard and Nico Schulz – has been the envy of the Bundesliga and beyond.

The team have gelled quickly if this summer is anything to go by, although perhaps the biggest winners have been Spanish goal-fiend Paco Alcacer, and 16-year-old American prodigy Gio Reyna…

Watch: Seattle Sounders 1-3 Dortmund
Goals: 0-1 Wolf (37'), 0-2 Alcacer (50'), 1-2 Campbell (54'), 1-3 Sancho (77')

Stunning efforts from Marius Wolf, Alcacer and Jadon Sancho handed Dortmund a 3-1 win over Seattle at the Century Link Field, with summer signings Schulz, Hummels, Hazard and Brandt all featuring for the first time.

Watch: Liverpool 2-3 Dortmund
Goals: 0-1 Alcacer (3'), 1-1 Wilson (35'), 1-2 Delaney (53'), 1-3 Bruun Larsen (58'), 2-3 Brewster (pen. 75')

Alcacer scored again - with USA youth international Reyna providing the assist - as Dortmund powered to a 3-2 victory over Jürgen Klopp's 2018/19 UEFA Champions League winners Liverpool in Indiana.

Watch: Dortmund 4-1 Udinese
Goals: 1-0 Hazard (6'), 2-0 Götze (19'), 3-0 Weigl (28'), 4-0 Brandt (44'), 4-1 Mandragora (76')

Hazard scored his first Dortmund goal and Reyna made his third appearance for the club as the 2018/19 Bundesliga runners-up brushed aside Italian Serie A side Udinese to make it three pre-season wins from three.

St. Gallen 1-4 Dortmund (highlights to follow)
Goals: 0-1 Hakimi (3'), 0-2 Bruun Larsen (31'), 0-3 Bruun Larsen (43'), 1-3 Vilotic (45+2'), 1-4 Reus (64')

Achraf Hakimi, Marco Reus and Jacob Bruun Larsen's brace completed Dortmund's perfect pre-season with a 4-1 victory over St. Gallen and former Hertha Berlin shot-stopper Jonathan Klinsmann.