Temperatures expected to reach upwards of 45 degrees has seen cricket and several other sports across Sydney cancel Saturday sport.
Cricket NSW cancelled all grades of the NSW Premier Cricket competition and recommended that associations across Sydney follow suit.
Parramatta District Cricket Association, Blacktown City & District Cricket Association and Nepean District Cricket Association have all also abandoned all junior and senior matches scheduled on Saturday.
Cricket NSW chief executive Andrew Jones said the decision was reached to ensure the welfare of players, umpires and volunteers.
“This is not a decision we take lightly. We waited for the latest forecast possible before making a final decision,” Mr Jones said.
Mr Jones urged all associations to take a cautious and common sense approach with junior and senior cricket.
“We want men and women, girls and boys, to play as much cricket as possible however duty of care comes first,” Mr Jones said.
“Cricket NSW does not administer local club cricket so each association should judge the suitability to play depending on local conditions in their region but the welfare of players and umpires must be the central consideration,” Mr Jones said.
In rugby league, the start of the NSWRL junior representative season has been pushed back a week in line with NRL Heat Guidelines.
It means the under-16s Harold Matthews, under-18s SG Ball and the inaugural round of the under-18s girls Tarsha Gale Cup effectively starting in Round 2 next week.
Football NSW has cancelled all training and trial matches on Saturday.
On Sunday, under-20s, reserve grade and first grade games will be held after 5.30pm or cancelled if agreed to by both teams.