"It set up really nice," Williams explained.
Detwiler needed just five pitches, four of them strikes to get through a scoreless inning of work in his 12th appearance out of the bullpen this season.
Nats' second baseman Danny Espinosa fielded the weak grounder and ran Abreu back to first base, forcing him to retreat, then threw to Tyler Moore for the out at first base trapping Abreu on the basepathss.
"[Detwiler] got -- there was a base hit the second hitter," Williams said, "but [Detwiler] made a really nice pitch for the double play. Danny made a nice play on it to run the guy at first base back to first base and get the throw over there in time to force him and then we had a rundown."
On Saturday afternoon in the nation's capital, Gio Gonzalez struggled in his second straight outing and was done after just three innings of work on the mound in which he gave up seven hits and five earned runs. In his last two starts, the 28-year-old lefty has given up 16 hits, five walks and 12 ER in 7 1/3 IP.
"I think it's the same thing," Williams said after the Nationals' 5-2 loss to the Mets. "His last start he gave up a pair of three-run homers on 3-0 counts, which means that he's behind in the count. Never really found his curveball, never really found his changeup today. Getting behind and having one pitch to go to, it's tough."
Stammen did the bulk of the work yesterday.
The 30-year-old right-hander's four scoreless innings on the mound left him with a 2.52 ERA on the year after 13 games and 25 IP in which he's walked four (1.44 BB/9) and struck out 20 (7.20 K/9).
"The bullpen has been fantastic," Williams said after Stammen, Barrett and Blevins combined for six scoreless innings in relief of Gonzalez.
" It was great again today," he continued.
Stammen's four scoreless?
"That's yeoman's work right there, man," Williams said. "That's hard to do. [Stammen] has been phenomenal. The rest of the guys down there pitched really well today. And they have been. We just couldn't recover from that deficit today, it's hard to do on a consistent basis, so, commend them for their work though."
The Nationals' relievers, as a group, entered play on Saturday with the NL's third-lowest ERA, 2.21, behind only the San Francisco Giants' relievers' 2.15 ERA and the San Diego Padres' 'pen's 2.01 ERA. The Nats' bullpen's 3.09 FIP was good for fourth in the National League. Their combined +1.3 fWAR was the NL's third-highest, behind the Milwaukee Brewers' +1.5 and the Atlanta Braves' +1.9.
After Roark's five innings and Gonzalez's three, Williams has to hope to get a little more out of Jordan Zimmermann in this afternoon's series finale with the Mets, but the 27-year-old right-hander is coming off back-to-back outings in which he was out after four scoreless (in a rain interrupted game) and 5 2/3 IP last time out against Arizona, in a start which saw him allow 10 hits and five runs before he was lifted.