Shaun Marsh has become the first player to be reprimanded for failing to wear a helmet compliant with Cricket Australia’s new State Equipment and Apparel Regulations.

Marsh, who made a century in Western Australia’s loss to South Australia in yesterday’s opening round of the Matador Cup, was reported for the style of helmet he opted to wear, which fell foul of the new regulation, introduced on October 1, that requires “all Australian and State contracted players to wear a helmet compliant with the British Standard – BS7928:2013 ‘Specification for head protectors for cricketers’”, CA said in a statement.

WATCH: Batting bonanza opens Matador Cup

The new regulation came about as a result of an ICC directive for Member countries to adopt the British Standard as the new international standard for helmets, and CA informed its players in August that the rule would be applied from the beginning of the 2015-16 summer.

Players were advised they could either be provided a compliant helmet by CA, otherwise their manufacturer had to provide one. A compliant helmet is identified by a sticker on the helmet and umpires throughout the Matador Cup are undertaking random compliance checks.

Given it was Marsh’s first offence in the past 18 months, he was offered and accepted a reprimand from match referee Stephen Bernard.

The left-hander made 108 in his first outing of the summer, sharing a record-breaking 216-run stand with Cameron Bancroft (176) as the pair provided the backbone of the Warriors’ total of 4-350 from 50 overs.

Quick Single: Marsh, Bancroft make most of Matador outing

Both players are looking to stake their claims for the Test side ahead of the three-match series against New Zealand next month, after being selected in the 15-man squad for the now postponed tour of Bangladesh.

"I'm disappointed for them (to miss the tour)," Warriors coach Langer told cricket.com.au in Hurstville.

"But that said, their security is the most important thing.

"They've done everything the selectors could have asked of them today.

"They're potentially going to open the batting for Australia, but here they are opening for Western Australia and they both got hundreds in a 200-run partnership which is an outstanding effort."