The Nationals had a big inning at the plate in the victory while Eddy Yean got the start and went two innings.
He was followed by Andy Lara, who also went two innings, Carlos Romero, Pablo Aldonis, Lucas Knowles, and Edward Urena, according to Matt LeCroy, the quality control coordinator in player development for the Nationals.
On offense, infielder Drew Mendoza was 2 for 3 with a two-run double while catcher Ivan Murzi homered to left in his only at-bat.
Mendoza was drafted last year in the third round out of Florida State and played for Single-A Hagerstown in 2019.
Yean, 19, is from the Dominican and pitched in the Gulf Coast League and for Auburn in 2019. He has a career ERA of 4.70 after starting his pro career in 2018.
Lara and Aldonis were signed on July 2, 2019 while Urena was signed as a non-drafted free agent earlier this year.
Romero also pitched for Auburn in 2019.
Knowles, from Washington State, was drafted in the 14th round last year out of a Junior College in Arizona. He posted a WHIP of 0.91 in his first pro year in the Gulf Coast League and Auburn.
Sunday was the last game against the Marlins.
The Nationals plan to have a workday on Monday and then an intrasquad contest Tuesday before breaking camp, according to LeCroy, the manager at Double-A Harrisburg in 2019.