Thirteen teams voted against changes to the NBA draft lottery system, voting down the measure during Wednesday's Board of Governors meeting.

The Philadelphia 76ers and Oklahoma City were the two teams that led the charge against the system.

The Chicago Bulls and Washington Wizards were two of the bigger market teams that voted against the reform, while the Sacramento Kings voted for it.

The Phoenix Suns, New Orleans Pelicans, Detroit Pistons, Miami Heat, Milwaukee Bucks, San Antonio Spurs, Utah Jazz, Atlanta Hawks and Charlotte Hornets also voted against it.

"Several teams started to wonder about unintended consequences and voted no to be able to do further study," said one owner.

The Oklahoma City Thunder have joined the Philadelphia 76ers in opposing the NBA's proposed changes to the draft lottery system, according to a report from Yahoo's Adrian Wojnarowski.

Chris Mannix of Sports Illustrated reports that the Milwaukee Bucks will also oppose the proposal.

Sam Presti has attempted to warn other small-market executives that changing the system is a risky proposition for their franchises.

Uner the proposed new system, the worst four teams have a 12 percent chance at the first pick, No. 5 has an 11.5 percent chance, No. 6, 10 percent, and on down.

The changes have been triggered by a response to the 76ers' pursuit of high draft picks in successive seasons.

Presti's belief is that the changes would give big market teams another advantage.

"Everyone is too focused on Philly, on one team in one situation," said one sympathetic GM. "The only chance for a lot of teams to ever get a transformational player is through the draft, and eventually we are all going to be in the lottery, in that spot. The teams that'll drop from two to eight, or three to nine – that's just going to take the air out of those fan bases and franchises. They'll get little, if any chance, to improve.

"We are going to see more big-market teams who just missed the playoffs jump up and get a great young player at the top of the draft. And people are going to go "What the [expletive] just happened?"

The 76ers and Thunder need six more teams to join them in opposing the rule change before Wednesday's vote.

As one Western Conference GM said, "Then there will be no going back. I hope we know what we're doing with this one."

The NBA has sent a memo indicating that the 30 teams could vote on a lottery reform measure at the Board of Governors meeting later this month.

The tweaks will include the four worst teams having an equal 12 percent chance to win the No. 1 overall pick and the worst team could fall no lower than No. 7.

The four lottery teams with the best records would have, in order, a 0.5 percent, 1 percent, 1.5 percent and 2.5 percent chance at the No. 1 pick, while also having an improved chance of moving into the top-6.

A vote for approving this proposal is expected.