Second-round pick (No. 80 overall) Anthony Renda, a second baseman from the University of California, will report to short-season Class A Auburn after agreeing on his contract.
The other two players to sign were Samford outfielder Brandon Miller (fourth round, No. 144 overall) and Clemson catcher Spencer Kieboom (fifth round, No. 174 overall).
Kline added that Washington general manager Mike Rizzo will handle contract negotiations with the team's first-round pick, right-hander Lucas Giolito (No. 16 overall) from Harvard-Westlake (Calif.) High School.
"Other than that, it's the day after the storm," Kline said.
Mike Fiammetta is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.