The Cardinals and Dodgers are determined to land a top-level starter prior to Thursday's non-waiver trade deadline and have remained in contact with the Red Sox and Rays on the two left-handers.
Philadelphia told Los Angeles that they wanted three of the team's top prospects -- outfielder Joc Pederson, shortstop Corey Seager and left-handed pitcher Julio Urias.
Jeff Luhnow said this week that the Astros are open to trading a starting pitcher, because "you could make an argument that we could give one up and still be fine."
The deadline, which is 4:00 PM EST on Thursday, could come and go without fireworks -- or it could include big names like Jon Lester, David Price and John Lackey.
They are also willing to listen to offers for Justin Masterson, but Cabrera makes for a more interesting target because he is having a better season than the pitcher.
The Orioles are in position to win the American League East and have a need at the top of their rotation, but seem unlikely to make a splash ahead of Thursday's non-waiver trade deadline.
The Astros aren't close to any deals, but appear to have softened their stance on the possibility of trading Dallas Keuchel, Collin McHugh and Jarred Cosart.