Manchester Maccabi fell to an 180-run defeat against Olympic in the Great Manchester Amateur League.
Two wickets from Steven Allweis plus a catch and a run out from captain Ray Tammam was about as good as it got for Maccabi as Olympic amassed 316-6.
Maccabi's reply featured some gritty knocks, most notably from Marc Williams (32), Wayne Doyle (18) and teenager Rafi Dines (18).
The result leaves Manchester 8th in the table.
Tammam admitted that his team had under-performed but he was also unhappy with what he described as "a poor umpiring performance".
He said: "Whilst the margin of victory looks large, their main batsman was clearly caught out early on but didn't walk as the umpire wasn't sure and he went on to score 191.
"Incredibly, he also hit his wicket which again the umpire said he didn't see.
"Our bowling and fielding wasn't as accurate as it should have been. Our batting was generally good but too many of us got starts but didn't push on though youngsters Rafi Dines and Jamie Benjamin played well."