Josh Bell will sit for the third straight game while dealing with a groin issue that kept him out of the lineup for the final two matchups in Cincinnati.

The Nationals designated hitter tweaked his right groin muscle running out a ground ball in the seventh inning of Friday night’s loss to the Reds. Manager Davey Martinez kept the 32-year-old out of the lineup for the final two games against the Reds as a precaution, especially due to the bad weather all weekend at Great American Ball Park.

But although Bell is feeling better, Martinez continues to practice caution, sitting him again for the opener against the Guardians, his former team.

“He's doing better. I'm being very cautious,” the skipper said during his pregame media session. “We have played in some bad weather. He's a big guy, so I want to make sure that he's OK. But he's definitely doing better. Yesterday he said he was a lot less sore than he was the day before, so that's good.”

Bell has struggled to start the season, hitting .139 with a .528 OPS in 30 games. Although, he is third on the team with five home runs and 14 RBIs. With him sidelined, Alex Call (and his .875 OPS) has the chance to play more, and is manning left field tonight while James Wood serves as the designated hitter.

PHILADELPHIA – The Nationals made their first significant bullpen change of the season this evening, signing veteran left-hander Andrew Chafin to a major league deal and designating Colin Poche for assignment.

Chafin, 34, has 601 games of big league experience with six different clubs, the first 380 of them with the Diamondbacks. Owner of a 3.42 ERA, 1.275 WHIP and 20 career saves, he had a 3.51 ERA in 62 games with the Tigers and Rangers last season.

Chafin opened this season with Detroit's Triple-A club in Toledo, posting a 2.13 ERA and 17 strikeouts in 12 2/3 innings before opting out of his minor league contract and becoming a free agent. He's scheduled to join the Nats in Cincinnati on Friday.

Poche made the Opening Day roster out of spring training based on his solid track record with the Rays, but the 31-year-old struggled from the outset and never found a groove despite a number of opportunities. In 13 total appearances, Poche had an 11.42 ERA, issuing 12 walks in only 8 2/3 innings. He also allowed 8-of-12 inherited runners to score.

Chafin will join Jose A. Ferrer as the two left-handers in a Nationals bullpen that enters the day ranked last in the majors with a 7.41 ERA and 1.77 WHIP. The team will be a man down for tonight's game, with only seven available relievers.

PHILADELPHIA – As their season enters its second month, the Nationals have established an ability to be far more competitive against top competition than they had been the previous three seasons as they embarked on their roster rebuild. They’ve stood toe-to-toe with the Mets, Phillies, Dodgers and Diamondbacks in a manner not seen around here in a while.

But that doesn’t mean they’ve looked competitive against that caliber of competition every night. Sometimes, they’ve still looked like the inferior ballclub, as was the case tonight during a 7-2 drubbing at the hands of the Phillies.

Jake Irvin labored through his worst start of the young season, putting his team in an early hole and allowing runs in four of the six innings he pitched. The lineup didn’t have a rousing rally in it this time, unable to duplicate its impressive feat from Tuesday’s series opener, instead going down quietly against the Philadelphia pitching staff.

“The last week, 10 days, it seems like anybody coming out of the bullpen, we’ve been all over,” designated hitter Josh Bell said. “But they definitely had our number tonight.”

As such, the Nats lost their third straight game, falling to 13-18. They’ll need a win in Thursday’s finale here to avoid a disheartening series sweep before heading to Cincinnati for the weekend.