"It wasn't arguably my worst outing, it [was] definitely my worst outing," Detwiler said. "Nothing worked. Bad location, bad pitches, everything.
"There was one pitch that I actually threw down in the zone and it got hit on the ground. When you do that one time in three innings, you are going to get hurt pretty bad. All I can remember is one pitch that was actually good."
On Monday at Citi Field when the teams meet in their final series of the season, Detwiler looks to rebound against the same Mets team that hit him hard that day. Detwiler will be making his seventh start of the season. Before his sixth, he was pitching solidly in a starting role, posting a 3.14 ERA in his first five outings.
The lefty will be opposed by the same pitcher he faced Sept. 2, Mets right-hander R.A. Dickey. Including that outing against the Nationals, Dickey has won three straight games, his longest streak of the season. The other two wins were both shutouts, including his latest, a four-hit, seven-inning performance against the Marlins.
Dickey hasn't given up an earned run in his last 20 innings against the Marlins, so it was business as usual in his last outing, despite him not necessarily carrying his best stuff to the mound. Dickey has now turned in a career-best nine straight quality starts.
"Sometimes you match up better against a certain type of hitter, and maybe this is a team that's got those types of hitters for me," Dickey said of Florida. "I don't know."
He'll find out Monday if the same holds true for the Nationals. Dickey is 2-3 with a 4.18 ERA in 10 career outings (eight starts) against Washington.
Nationals: Espinosa one homer away
Danny Espinosa's next home run will match the franchise single-season mark for most homers by a rookie, which is shared by Ryan Zimmerman (20 for Washington in 2005) and Brad Wilkerson (20 for Montreal in 2002).
His next blast will also make him only the third rookie second baseman in Major League history to hit at least 20 home runs. He would join Dan Uggla (27 for Florida in 2006) and Alexei Ramirez (21 for the White Sox in 2008).
The Nationals finished the season 20-19 against National League Central opponents.
Mets: Santana unlikely to pitch this season
Johan Santana will pitch in Class A Savannah's Minor League playoff game on Thursday, but he likely will not pitch for the Mets this season.
"The one thing we don't want to do is take a big step backward," manager Terry Collins said. "I think the process that they've set down is going to work, and Johan's bought into it. Right now, we have no plans to see him here."
Angel Pagan and Jose Reyes are the only pair of teammates in the Majors with at least 30 steals each. It's the second consecutive season in which Pagan and Reyes have each reached 30 steals.
The Nationals need three more wins to eclipse last season's total of 69.
Nationals outfielder Jayson Werth is hitting .409 (9-for-22) with two homers against Dickey, while teammate Rick Ankiel is a career .400 (8-for-20) hitter against the knuckleballer.
The Mets will play 10 of their remaining 16 games at Citi Field.