What to watch for in today's games

Porcello debuts with Boston; division battles highlight slate

What to watch for in today's games

The regular season is in full swing as we head into today's slate of games. All 30 teams are back in action with some intriguing matchups on tap.

Here's are some things to watch for:

• Porcello, Harang debut in new uniforms, BOS@PHI, 7:05 p.m. ET

Rick Porcello and Aaron Harang will make their regular-season debuts for their new clubs when the Phillies host the Red Sox. Porcello made headlines earlier this week with news of a four-year, $82.5 million contract extension. The 26-year-old righty joined the Red Sox in an offseason trade with the Tigers and is coming off of his best season, during which he posted a 15-13 record and a 3.43 ERA. Meanwhile, Harang will have his hands full with Boston's Hanley Ramirez, who is 10-for-28 with five homers and seven RBIs against him. More >

Harang on 2015 in Philly

• deGrom, Zimmermann duel in Washington, NYM@WSH, 7:05 p.m. ET

Reigning National League Rookie of the Year Award winner Jacob deGrom begins his sophomore campaign when his Mets take on the Nationals in the nation's capital. Opposite deGrom will be veteran hurler Jordan Zimmermann, who owns a 2.98 ERA through 20 career starts against the Mets. Zimmermann's last regular-season season was a no-hitter against the Marlins on Sept. 28. The Mets will look to bounce back from last year's campaign in which they lost 15 of 19 games against the NL East-rival Nationals. More >

Zimmermann's no-hitter

• Blue Jays seek success in New York, TOR@NYY, 7:05 p.m. ET

The Blue Jays will try to reverse a long history of losses in the Big Apple when they face the Yankees in the Bronx. Toronto took the season opener with a 6-1 victory but hasn't won a season series in New York since 2003, posting a 33-70 record in that span. The Blue Jays lost as many as 17 consecutive games in New York from Sept. 19, 2012, to July 25 of last season. R.A. Dickey will start for the Jays, while Michael Pineda gets the ball for the Yankees. More >

Girardi discusses Pineda

Chad Thornburg is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.