SAN DIEGO -- London is not calling for Major League Baseball next year.

The players' association says MLB has given up plans to play regular-season games in the English capital in 2017.

Baseball commissioner Rob Manfred said in January that his staff was working hard at playing in London, and MLB officials looked at the renovated Olympic Stadium as a possible venue.

London's Olympic Stadium was considered for possible MLB regular-season games in 2017 but the those plans are now scrapped, according to the players' association. LEON NEAL/AFP/Getty Images

"There was discussion about London early on," union head Tony Clark said Monday. "Unfortunately there were a number of moving pieces related to London that shortened our window in an effort to try to find common ground on that happening, and we weren't able to get it done in time."

Clark also was noncommittal about having players on 25-man active rosters made available for the 2020 Olympics, which will be held in Tokyo from July 24 to Aug. 9. The International Olympic Committee executive board voted last month to support a six-nation tournament that year in both baseball and women's softball, and the full IOC is to vote in August.

Baseball became a medal sport for the 1992 Barcelona Olympics but was dropped for the 2012 London Games and won't be played this year in Rio de Janeiro. In 2008, only those not on 25-man big league rosters as of late June were allowed to compete; the U.S. team included Jake Arrieta and Stephen Strasburg -- both All-Stars this year.

"Is there an appreciation for the value of having baseball in the Olympics? Yes, there is," Clark said. "Is there an appreciation for the season and how or if it could work with our active players? Yeah, there's a conversation, but we run into the same roadblocks we always have."