Beaman's Sixes teammate Stewart Brew and his fellow opener Tony Morgan guided Optimists to victory in only 8.1 overs, the match ending at 12.27 pm.
Brew was unbeaten on 41 while Morgan made 26 not out as Optimists, who earned 20 points for the win, scored 70 without loss.
IRC failed to win a point.
Pakistan Association were another team to be bowled out for less than 100 as they were beaten by six wickets by Templars at Diocesan Boys School.
Although they held out for more than 40 overs, Pakistan scored at a little more than two runs an over and were eventually bowled out for a meagre 92.
Only two batsmen, J. Iqbal (32) and A. Amdani (23) made double figures, while Nanda Perera and Yarman Vachha grabbed three wickets each for defending Sunday champions Templars.
But Templars' run-chase was also not without hazard as they lost four wickets before eventually overhauling their target in the 26th over.
Ravi Sujanani, who took two for 10 earlier in the match, top-scored with 31. He was helped by Charlie Goonesena, who was unbeaten on 25.
Templars earned 20 points for the win, restricting the Pakistanis to a single point.
So Kon Po was where the runs were yesterday as Wanderers notched a seven-wicket victory over British Forces.
British Forces, in their maximum 55 overs, lost six wickets in scoring 217 - more than the totals of IRC and Pakistan Association combined.
Paul Chambers and Anthony Wright were the key run makers of their innings. Chambers scored 42 while Wright hit 57.
Tim Davies took four wickets for Wanderers, conceding 60 runs.
Mike Walsh scored 80 not out as Wanderers made 218 for three wickets. Also contributing runs were Mike Swift (34), Mike Peck (25), Andy Scattergood (27) and Stuart Grange, who made 27 before being forced to retire hurt.
The matches between Vagabonds and Scorpions, at Mission Road, and Infidels and Little Sai Wan, at Kowloon Cricket Club were postponed.
Teams had the option not to play as the matches were only one day after the International Sixes, which ended on Saturday.
