Ireland fell to a 9-0 defeat to Germany in the first game of their three test series in Hamburg with Florian Fuchs scoring four times.
Moritz Fürste (two), Timur Oruz, 18-year-old prospect Timm Herzbruch and Christopher Rühr also weighed in with goals.
Ireland were 2-0 up after the first quarter, five down at the break and it was nine by the end of the third quarter before the last 15 minutes was scoreless.
It was Ireland’s heaviest defeat since 1979, a 12-0 defeat to the Netherlands, and was their equal second biggest loss of all time, equal with a 9-0 loss in the 1978 World Cup in Pakistan.
The two sides meet again on Friday evening before completing their series on Sunday.