Phillies (26-25) vs. Nationals (31-21)
7:05 p.m. on CSN
The Phillies are in a rut, an expected rut given their recent schedule.
On Tuesday, they'll try to get back on track behind the young right-hander who's emerging as their stopper.
Complete coverage of the Fightin' Phils and their MLB rivals from NBC Sports Philadelphia.
Let's take a look at the second of their 10-game homestand:
1. Not measuring up
The Phillies have lost six of their last seven games and are riding their first four-game losing streak since they started the year 0-4. Prior to last week, they'd done a decent job this season of avoiding lengthy skids, but this is definitely the toughest stretch they've faced in 2016.
Over these seven games, the Phils have been outscored 34-21 by the Tigers, Cubs and Nationals, three veteran teams filled with power. Two of the games have been decided by one run and the Phillies lost both after holding late leads.
At 14-5, the Phils still have far and away the majors' best record in one-run games, but this is what regression looks like. Hector Neris wasn't going to go through a full season without a hiccup. And the best example of how unsustainably productive he's been was that even after allowing three runs in just two-thirds of an inning, Neris' ERA is still 2.20. It's difficult for a reliever to get hit around and still have that low an ERA, especially this early in the season.
If the Phillies lose again tonight, they'll be right at .500 for the first time since they were 10-10. They've spent the last 33 days of the season with a winning record.
2. Nola gets the nod
Jeremy Hellickson turned in his second straight excellent outing against the Nationals on Memorial Day and Aaron Nola looks to do the same.
Nola, like Hellickson, struggled the first time he faced Washington this season, allowing seven earned runs in five innings.
Nola, like Hellickson, rebounded the next time he faced the Nats — both allowed two hits over seven shutout innings in their second start against Washington.
Now Nola looks to build upon that success the way Hellickson did Monday night, when he lowered his own ERA to 3.68 by allowing a run on three hits over seven innings.
Nola is 4-3 with a 2.86 ERA in 10 starts this season. He's struck out 70, walked 12 and allowed five home runs in 66 innings. His opponents have hit .200.
Nola has missed more bats and struck out more batters at the major-league level than anyone expected. His control has been as advertised — he's walked just 31 batters in 143⅔ career innings. This season, he's cut his home run rate in half. He allowed 11 in 77⅔ innings as a rookie.
Nola continues to lead the National League with 242 called strikes, 17 more than Tanner Roark, who is second. That number speaks to the effectiveness of Nola's knee-buckling curveball, which has generated 65 swings-and-misses, second-most in the majors to Jose Fernandez's 77. (Jerad Eickhoff is third in the NL with 33.)
Current Nationals are 19 for 65 (.292) against Nola with two doubles, a triple, two homers and 18 strikeouts. Bryce Harper, who left Monday's game in the seventh inning after being hit by a pitch on the knee, is 6 for 10 with two of those home runs. Jayson Werth and Anthony Rendon have also taken Nola deep.
3. Harper out?
Harper left the game in the seventh with what was diagnosed a right knee contusion. It would obviously be a huge relief for the Phillies if he's out of the lineup Tuesday, especially considering how he's hit lately at Citizens Bank Park.
Harper brought into Monday's game a streak of six straight games with a home run at Citizens Bank Park, tying the longest home run streak in MLB history for any player at a visiting stadium.
Harper, who hit .330 last season, won an MVP and led the NL in practically every meaningful offensive category, has been in a lengthy slump. Over his last 32 games, he's hit .183 with just five extra-base hits in 133 plate appearances. Teams have stopped pitching to him. Harper has 35 walks over that span, nine intentional.
But Harper is obviously a threat any time he comes to the plate, and he's hit pretty much any pitcher the Phillies have thrown at him the last two years. In 104 plate appearances against them since the start of 2015, Harper has hit .346 with three doubles, 11 homers, 23 RBIs, 21 walks and 23 strikeouts.
4. Another crack at Ross
Nationals right-hander Joe Ross (4-4, 2.52) makes his 10th start of the season tonight against the Phils. He shut them down on April 15 in his second start, pitching 7⅔ shutout innings in his best outing of the year.
Ross has allowed one run or fewer in five of nine starts and two earned runs or fewer in seven of nine. He's given up more than three earned runs just once all season, on May 10 against the Tigers.
The younger brother of Padres opening-day starter Tyson Ross, Joe is mostly a three-pitch pitcher who throws a lot of sinkers and sliders. When he faced the Phillies earlier this season he threw 55 sinkers, 38 sliders and 14 changeups.
Like his brother, Joe Ross loves the slider with two strikes, throwing it 73 percent of the time this season with two strikes on a right-handed hitter. His opponents this year are 16 for 92 (.174) against the slider with four home runs and 37 strikeouts.
Lefties (.295 BA, .757 OPS) have hit him much better than righties (.209, .598). Might that mean another start for Ryan Howard?
5. This and that
• Carlos Ruiz is 0 for 21 over his last six starts and is down to .222 on the season.
• Daniel Murphy had three more hits and drove in three runs against the Phillies last night. He's a .313/.363/.487 career hitter against them in 457 plate appearances. Playing in the NL East the last eight seasons, Murphy has hit lower than .293 just once vs. the Phils.
• Freddy Galvis, who homered off Roark on Monday, has hit well at home this season with a .284 batting average and .779 OPS in 85 plate appearances. Galvis is 12 for 33 (.364) over his last eight games overall with four doubles, a triple and a homer.
• Jonathan Papelbon has faced the Phillies six times since they traded him to the Nationals last summer. In those six games, he's allowed nine runs (six earned) and put 13 men on base. The Phils have seven hits (five doubles) against him in 2⅔ innings this season.