PHILADELPHIA (Interstat) — The Washington Nationals, riding a potent early-season offense, open a three-game series against the struggling Philadelphia Phillies on Monday at Citizens Bank Park.

First pitch is scheduled for 6:40 p.m. EDT under cloudy skies with a temperature around 55 degrees.

The Nationals (2-1) arrive after taking two of three from the Chicago Cubs, including a 6-3 victory Sunday. Philadelphia (1-2) looks to rebound after dropping two of three at home to the Texas Rangers, including an 8-3 loss Sunday.

Washington will send left-hander Foster Griffin to the mound. Philadelphia will counter with right-hander Taijuan Walker.

A key matchup will feature Nationals right fielder Joey Wiemer, who is 6 for 6 with two home runs and four RBIs over his last two games, against a Phillies pitching staff that allowed 16 runs in its last series. Wiemer went 3 for 3 with a homer and three RBIs in Sunday’s win.

For Philadelphia, the focus will be on starter Jesús Luzardo, who seeks a better result after struggling in his first outing. On Sunday, Luzardo took the loss against Texas, allowing six earned runs on six hits over six innings, though he did strike out seven.

Despite Philadelphia’s early troubles, betting markets have installed the Phillies as a -1.5 run favorite. The over/under for total runs is set at 9. Interstat’s game simulator projects a high-scoring affair, predicting a 6-5 Nationals victory.

Following this series, the Nationals return home Friday to host the Los Angeles Dodgers. The Phillies embark on a six-game road trip Friday, starting with three games against the Colorado Rockies.