Late in the Washington Nationals‘ victory over the Chicago White Sox on Tuesday, as Jayson Werth stepped into the batter’s box, Davey Johnson looked up at the scoreboard and noticed something.

The Nationals’ right fielder, known for his patient approach at the plate, had the same on-base percentage as his batting average.

“Unless the scoreboard is wrong, he hasn’t walked yet,” Johnson said.

The scoreboard was not wrong.

Since 2007, 12.6 percent of Werth’s at-bats have resulted in a walk. When it comes to pitches seen per plate appearance, Werth led the National League in 2009, 2010 and 2011. In 2007, 2008 and 2012, when Werth came just short of the minimum plate appearances needed, his percentage would have easily led the league had he qualified.

So: seven games, no walks? Johnson viewed it as a good sign.

“That just tells me he’s been swinging the bat more aggressively,” the manager said. “His wrist is feeling good and he’s being more aggressive. I like that. He’ll get his walks, I’m not worried about that.”

“I think I have been more aggressive this year,” Werth said shortly after he hit a first-pitch home run in the sixth inning and a second-pitch single in the seventh Tuesday.

“But usually I’m aggressive when I feel good at the plate and when I’m not as aggressive I usually don’t feel as good. It just depends.”

For Werth, any questions that hung over him as he entered the 2013 season centered on the health of the left wrist he broke in May. If it wasn’t at full strength, it wasn’t clear what kind of power he might have. It wasn’t clear what his ability at the plate might be, despite how well he performed down the stretch when he returned in 2012.

Werth has quieted those questions, though, smoking three home runs in his first seven games of the season, and just missing a few others. His power, it seems, has returned in spades.