As a team, Los Tigres have hit Porcello well in the past: 30-for-88 with 4 walks, that’s a BA of .341 and an OBP of .368. Beckham has had the bulk of those plate appearances and hits; he’s 15-for-34 which is a whopping .441 against Mushroom Man.
The only three Red Sox who have 10+ ABs against Zimmermann are Pearce, Pedroia, and Moreland, all of whom are on the disabled list. Take away those three guys and the rest of the lineup is 18-for-48 (.375) against this pitcher.
This is already looking like a high-scoring affair.