The Nationals have not announced any details about a make-up date yet, as the note above mentions.
The Nats and Marlins both have Thursday off, but according to reports from Nationals Park this evening, the two teams will not make this game up this week, but will instead make it up at some other as-yet undetermined point in the future:
Matt Williams says no makeup date decided yet, but it won't be this week. So, one game tomorrow at 7:05, off day Thursday.— Mark Zuckerman (@ZuckermanCSN) May 27, 2014
Jordan Zimmermann will start tomorrow. Treinen will move to the bullpen for now.— Dan Kolko (@masnKolko) May 27, 2014
Treinen, as MASN's Dan Kolko notes, will reportedly be available out of the bullpen over the next few games.
Jordan Zimmermann will remain on schedule to start tomorrow vs. the #Marlins. Blake Treinen will be available in bullpen for next few days.— Washington Nationals (@Nationals) May 27, 2014
Zimmermann has faced the Marlins twice already this season. In the first outing he was knocked out after just 1 2/3 IP, having given up seven hits and five earned runs.
He rebounded in his next start following that outing, which was also against Miami, giving up six hits and two runs in seven innings of work in a 9-2 Nats' win in which he earned his first win of the 2014 campaign.
In 13 career starts against the Nationals' NL East rivals, Zimmermann is (5-3) with a 3.84 ERA, 15 walks (1.75 BB/9) and 64 Ks (7.45 K/9) in 77 1/3 IP, over which he's held Marlins' hitters to a combined .252/.292/.407 line.
Zimmermann will be making his seventh start of the year at home in the nation's capital, where he's (1-1) with a 3.94 ERA so far this season.