"It feels great," Rivero said. "This year is kind of progression for me. I was able to get my first win and my first save in the same year. I wasn't expecting that."
The Nationals acquired Rivero from the Rays as part of the Nathan Karns deal in February 2014. Rivero was expected to be one of Washington's starters in the future, but manager Matt Williams sent him to Minor League camp last year to work on being a reliever. Rivero didn't have a problem with making the switch.
"I said OK. If I have to make the team that way, I'm going to get used to it," Rivero said.
Rivero has turned out to be one of the best relievers in the Nationals bullpen this year. Entering Friday's action, he has a 2.85 ERA in 48 games and Williams has used him quite a bit in the late innings.
"I work on it day by day, not trying to do too much. I'm just doing my job. That's all," he said.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All theTime. He also can be found on Twitter @WashingNats This story was not subject to the approval of Major League Baseball or its clubs.