"You don't get him on the ropes that often," manager Dusty Baker said of Cole, who is having an outstanding season. "Those are rookie mistakes that you would hope they would learn about in the Minor Leagues. But in modern baseball, you rush guys up. Everybody down there is about the same age; who's teaching who, besides the manager? When I was in the Minor Leagues, we had older guys that were teaching us, as well as the manager.
"You just got to teach as you go along in the big leagues. That's the difference between today and yesterday. You still have to do a lot of teaching, but you don't know what guys don't know until they actually make mistakes."
Goodwin, drafted in 2011, is 26 and he spent considerable time in the Minors before joining the Nats at the end of last season.
"He's got the skills," Baker said. "He's got big-time skills. But you know, you've seen other guys make mistakes, too."
Those guys include Bryce Harper, who threw to the wrong base instead of home in Wednesday's game.
"These are things you have to address," Baker said.
• The wait continues for infielder Stephen Drew, who has been working out daily with the club, but has yet to begin his rehab assignment.
Drew, a valuable and versatile reserve infielder, sustained a strained right hamstring on April 11 and went on the 10-day disabled list the next day.
"It's taken longer than we had hoped," Baker said. "He hasn't had any setbacks. As you get older, you heal slower."
Drew, 34, in his 12th Major League season.
Bob Cohn is a contributor to MLB.com based in Pittsburgh, who covered the Nationals on Thursday. This story was not subject to the approval of Major League Baseball or its clubs.