WASHINGTON -- Ryan Pressly was "kind of freaked out" when he felt a stinging in his pitching arm, but he was relieved after the game when tests uncovered no apparent problem.

Pressly was pitching to Nationals' third baseman Ryan Zimmerman in the sixth inning of the Twins' 7-0 loss Sunday, and felt an odd sensation in his arm as he released a first-pitch curveball. "On the next pitch, I felt a stinger in back, in my tricep," said Pressly said, who described the sensation as similar to hitting your funny bone. "It was really weird. I never had anything like that happen to me before."

Pressly was immediately removed from the game, and replaced by Josh Roenicke. In the trainers' room, Pressly underwent tests on his shoulder and elbow, "but everything checked out fine," he said. "I'll probably come in [Monday] and throw a little bit, see if there's any discomfort."

He's considered day-to-day with tricep soreness, the Twins said.

A couple of other notes: Miguel Sano homered twice in his farewell to Class A baseball -- shortly after Fort Myers' game Sunday, he was promoted to Class AA New Britain.

Class AAA Rochester has a new player, too, albeit just temporarily: Trevor Plouffe has been sent there on a rehab assignment as he recovers from a calf injury. He's eligible to come off the disabled list on June 14.

Here are the lineups for Game 2, with Chris Herrmann batting second for the first time:

TWINS

Carroll 3B
Herrmann C
Mauer 1B
Willingham LF
Parmelee 1B
Hicks CF
Escobar 2B
Florimon SS
Deduno RHP

NATIONALS

Span CF
Bernadina LF
Zimmerman 3B
Werth RF
LaRoche 1B
Desmond SS
Rendon 2B
Solano C
Karns RHP