The Baltimore Orioles will make a run at Brewers star Zack Greinke, sources say, and some now believe the Orioles and Atlanta Braves loom as the most likely to land Greinke in trade.

Of course, it's very early, so early Greinke isn't even known to be available yet. The Brewers are likely to wait to see how they fair against division competition in the games following the All-Star break before deciding whether to sell, a source said.

The Brewers are believed to have already received several calls on the free-agent-to-be Greinke, who is 9-2 with a 3.08 ERA, and it is believed that at least the Braves and Orioles will be major players.

The Braves have made sense since their rotation is now missing Brandon Beachy, Atlanta is known to like Greinke and the pitcher is believed to have an interest in them, as well, as was written here a few days ago. The Orioles also make sense, as unexpected contenders disappointed to have seen young starters Jake Arrieta, Tommy Hunter and Brian Matusz be demoted to Triple-A Norfolk in recent days. The Baltimore Sun also said the Orioles are expected to show interest in Greinke.

Greinke is one of the most talented pitchers in baseball, but it is believed that a couple of the biggest markets, such as the Yankees and Red Sox, will hesitate to trade for him because of his personal history.