SAN FRANCISCO (KCBS) – Thursday night’s Bay Bridge Series exhibition game between the Giants and A’s will mark the first time smokeless tobacco will be banned at AT&T Park. An anonymous survey found that most Giants players are less than thrilled with the new rule.

The city ordinance that bans the use of smokeless tobacco at all athletic facilities went into effect on January 1st, but this is the first time there’s been baseball at AT&T Park since then.

A survey of 25 Giants players by The Mercury News found that 21 of them say they will comply with the new rule. The same survey found only three players support it.

Meanwhile, Governor Jerry Brown has signed a state law that extends a similar ban to the other big league parks in California. That means smokeless tobacco will also be forbidden at the O.Co Coliseum in Oakland, along with the three MLB stadiums in Southern California, starting in 2017.