The Germans defeated Sweden, who suffered their second loss, 105:83 (27:17, 32:25, 25:24, 21:17) in Group B.
Denis Schroeder led the way with 23 points and seven assists, Franz Wagner had 21 points, and Maodo Lo finished with 13 points.
Melvin Pancars led the Swedish team with 18 points, Matthias Markusson scored 13 points, and Bara Njie had 12 points, seven assists, and five rebounds.
In Group B today at 16:30 Lithuania will play Montenegro, while at 20:30 Finland will face Great Britain. All European Championship matches will also be shown on the"Go3" platform.
Also in Group A, which is being played in Riga, the Czech Republic will face Turkey in the first match of the day today, Latvia will face Estonia at 6 p.m., and Portugal will face Serbia in the final match of the day at 9:15 p.m.
The European Championship final tournament will feature 24 teams divided into four groups in late August and early September in Riga, Tampere, Katowice and Limassol. The top four teams from each group will qualify for the knockout tournament, which will be held only in Riga.