In the German Baseball-Bundesliga the Bonn Capitals and Heidenheim Heidekoepfe remain undefeated after week four. Bonn swept the promoted Bremen Dockers, while Heidenheim downed the Saarlouis Hornets. The Stuttgart Reds and Ulm Falcons captured surprise wins in matchups against the Mainz Athletics and Buchbinder Legionaere Regensburg.
Results:
| Freitag, 20. April 2018 ‑ 19:00 | ||||
| Mainz | Stuttgart | 6:7 |  |
  |
| Samstag, 21. April 2018 ‑ 12:00 | ||||
| Berlin | Köln | 8:3 |  |
|
| Solingen | Dohren | 8:7 | |
|
| Paderborn | Hamburg | 2:0 | |
|
| Ulm | Regensburg | 1:21 | |
|
| Samstag, 21. April 2018 ‑ 13:00 | ||||
| Heidenheim | Saarlouis | 11:2 | |
|
| Samstag, 21. April 2018 ‑ 14:00 | ||||
| Mainz | Stuttgart | 9:2 | |
|
| Samstag, 21. April 2018 ‑ 15:00 | ||||
| Haar | Mannheim | 5:10 | |
|
| Samstag, 21. April 2018 ‑ 15:30 | ||||
| Berlin | Köln | 0:4 | |
|
| Solingen | Dohren | 8:2 | |
|
| Paderborn | Hamburg | 2:1 | |
|
| Ulm | Regensburg | 10:7 | |
|
| Samstag, 21. April 2018 ‑ 16:30 | ||||
| Heidenheim | Saarlouis | 16:12 | |
|
| Sonntag, 22. April 2018 ‑ 12:00 | ||||
| Bonn | Bremen | 5:0 | |
|
| Haar | Mannheim | 4:3 | |
|
| Sonntag, 22. April 2018 ‑ 15:30 | ||||
| Bonn | Bremen | 9:1 | |
|
Standings:
1. Bundesliga North
| # | Team | W | L | .pct | GB |
|---|---|---|---|---|---|
| 1 | Bonn | 8 | 0 | 1.000 | 0 |
| 2 | Solingen | 6 | 2 | .750 | 2 |
| 3 | Berlin | 4 | 4 | .500 | 4 |
| 4 | Köln | 3 | 3 | .500 | 4 |
| 5 | Paderborn | 3 | 3 | .500 | 4 |
| 6 | Dohren | 2 | 4 | .333 | 5 |
| 7 | Hamburg | 1 | 5 | .167 | 6 |
| 8 | Bremen | 1 | 7 | .125 | 7 |
1. Bundesliga South
| # | Team | W | L | .pct | GB |
|---|---|---|---|---|---|
| 1 | Heidenheim | 7 | 0 | 1.000 | 0 |
| 2 | Regensburg | 5 | 3 | .625 | 2.5 |
| 3 | Mainz | 5 | 3 | .625 | 2.5 |
| 4 | Haar | 4 | 3 | .571 | 3 |
| 5 | Mannheim | 4 | 4 | .500 | 3.5 |
| 6 | Stuttgart | 2 | 6 | .250 | 5.5 |
| 7 | Saarlouis | 2 | 6 | .250 | 5.5 |
| 8 | Ulm | 2 | 6 | .250 | 5.5 |