Giants catcher Buster Posey is one of 50 players on a preliminary roster to play for Team USA in the World Baseball Classic next spring, according to the New York Post.

Posey has not played in the WBC in prior years but had acknowledged earlier this season that he would like to participate.

The preliminary roster, which had to be submitted in October, is not the final one. Team USA general manager Joe Torre must submit his official list of participants in January. His choices are not limited to those 50 names, either.

But for now, there were two notable omissions from the American provisional roster. Angels outfielder Mike Trout, generally acknowledged as baseball’s best player, is not on it. And neither is Nationals outfielder Bryce Harper.

Harper’s agent, Scott Boras, confirmed to the Post that the Nationals star would not play, citing the need to focus on keeping a conditioning routine. Harper’s production tailed off in the second half, leading to speculation that he was dealing with a right shoulder injury.

Although the Angels have not commented on Trout’s hesitation, he has not given Team USA officials anything more than a soft maybe. Trout did not play in the last WBC tournament in 2013, and upset some organizers when he showed up to watch a game as a spectator.

Dodgers left-hander Clayton Kershaw has told Team USA officials that he might make himself available for later rounds, including the final at Dodger Stadium, depending on his health.

Giants left-hander Madison Bumgarner was not among the 20 or so star names on the roster that the Post mentioned in its story.