Renda was selected No. 80 overall out of the University of California-Berkeley.
In his junior year, Renda batted .342 for the Golden Bears and posted a .436 on-base percentage and .484 slugging percentage. The 5-foot-8, 180-pound second baseman also hit five homers and had 27 RBIs.
Renda highlighted the club's signings, as first-round pick Lucas Giolito, from Harvard-Westlake High School in California, has yet to agree to terms with Washington.
Washington also inked some of its other high Draft picks, including outfielder Brandon Miller (fourth round), catcher Spencer Kieboom (fifth round), center fielder Hayden Jennings (sixth round), right-handed pitcher Derek Self (ninth round), catcher Craig Manuel (10th round), right-handed pitcher Brian Rauh (11th round), third baseman Carlos Lopez (12th round), left-handed pitcher Elliott Waterman (13th round) and right fielder Jordan Poole (14th round).
Besides Giolito, the Nationals have not yet signed three other Top 10 picks, including third-rounder Brett Mooneyham, seventh-rounder Robert Benincasa, and eighth-round pick Stephen Perez.