In the seventh he extended his body to the fullest in making a diving catch on a ball hit by Tuffy Gosewisch.
"That was a tremendous catch, and it didn't look like he would get close to it," interim manager Ryne Sandberg said.
Bernadina, 29, made $1.21 million for the Nationals. He hit just .178 for Washington.
Brown feels better
Phillies outfielder Domonic Brown left Saturday's loss in the top of the third inning with a sore right Achilles tendon, but he said he was feeling better. Brown drew a walk as a pinch-hitter Sunday and was replaced by pinch-runner Casper Wells.
Brown said an X-ray showed inflammation of his Achilles tendon.
"It was really stiff [Saturday], taking a swing," Brown said. "I got on the meds last night, yesterday, and hopefully I will be back in the lineup [Monday] or the next day."
In addition to activating Roy Halladay from the 60-day disabled list, the Phillies selected the contract of righthander J.C. Ramirez from triple-A Lehigh Valley.
Righthanders Tyler Cloyd and Luis Garcia were optioned to the IronPigs.
Two other righthanders, Jonathan Pettibone (right shoulder strain) and Michael Stutes (right biceps tendinitis), were transferred from the 15-day DL to the 60-day DL.
The Phillies are 34-16 in Halladay's 50 career starts at Citizens Bank Park. . . . Cliff Lee, who pitches on Monday against the New York Mets, has not won since he posted a 5-4 victory over visiting Atlanta on July 5. . . . Phillies lefthander Jake Diekman has made seven consecutive scoreless appearances.