Eflin, Chatwood square off in first-half finale

Eflin, Chatwood square off in first-half finale

The Phillies and Rockies will close the first half of the season Sunday afternoon with an interesting matchup of two young right-handers on the mound: Zach Eflin and Tyler Chatwood.

Eflin, an integral piece of the Jimmy Rollins trade, has been excellent for the Phillies after his rocky first start. Eflin has allowed only six earned runs in 26 2/3 innings after allowing nine runs in 2 2/3 innings in his debut at Toronto. He is coming off a complete-game gem, holding the Braves to one run and six hits on 92 pitches Tuesday.

Chatwood has a career-low 3.08 ERA this season, including a 1.30 mark on the road, which is third-best among qualified pitchers. In his first start off the 15-day disabled list (mid-back strain) his last time out, he threw five strong innings, limiting the Giants to two runs (one earned) on three hits with four strikeouts and four walks.

Three things you should know about this game

• Phillies All-Star outfielder Odubel Herrera will likely return to the lineup Sunday after hitting a foul ball off his right foot on Friday. Between that, facing a lefty in Tyler Anderson and starting the series 0-for-10, Herrera did not start Saturday.

• Chatwood has walked at least three batters in each of his past five starts. That raised his walk rate from 6.2 percent to 8.9 percent.

• The Phillies will activate left-handed reliever Daniel Stumpf on Sunday after he is done serving an 80-game suspension for taking a performance-enhancing drug. Stumpf, a Rule 5 Draft pick, allowed three runs in three appearances over two-thirds of an inning this season.

Ben Weinrib is a reporter for MLB.com based in Denver. This story was not subject to the approval of Major League Baseball or its clubs.