Round 3 was to have been played on Saturday 19 May, but all matches cancelled due to heavy rain. The matches were rescheduled to the weekend after Round 14.[1] For the purposes of numbering, the original round designations are retained in this article. Some sources re-designate the round numbering into the final order in which they were played.
[1] Rodgers, Stephen, Every Game Ever Played, VFL/AFL Results 1897–1991, Ringwood, VIC: Viking O'Neal, pp. 17–18
Source: http://en.wikipedia.org/wiki/1900_VFL_season#Round_3