Rob Manfred says he's in favor of changing Major League Baseball's September call-up rules.

"I don't think 18 pitchers in a game is a good thing," the commissioner said.

There has been increasing talk about changing the rules regarding September call-ups in recent years, with one idea being that teams would have to designate a set number of players for each game.

"September call-ups were non-controversial for years," Manfred said. "I think the controversy has arisen because of changes that have taken place in the game. There are so many relievers, so many matchups, that it has made the presence of the extra players so much more visible as far as the pace of our games. I do think it would make sense to get to a situation where we way play closer to the rules we play the rest of the year."