The Washington Nationals activated Bryce Harper from the 15-day disabled list Monday.
Harper has been out 59 games with a torn ligament in his left thumb.
To make room for Harper on the 25-man roster, the club optioned left-handed reliever Xavier Cedeno to Triple-A Syracuse.
The Nationals open a series against the visiting Colorado Rockies. It is Bryce Harper bobblehead night at Nationals Park.
In five minor league rehab games, Harper batted .643. He also hit three home runs in one of those games.
Cedeno pitched one scoreless inning Saturday against the Chicago Cubs in his third major-league stint this season.
Harper, 21, is batting .289 with one home run and nine RBIs in 22 games this season.