Conforto missed time after being hit on the left hand by a pitch on June 25 against the Giants. The outfielder, who suffered a wrist contusion, earned his first career All-Star selection by hitting .285/.405/.548 over 69 games.
Nimmo had been used mostly off the bench since making his season debut on June 18, hitting .350/.458/.400 in 24 plate appearances.
Joe Trezza is a reporter for MLB.com based in New York. Follow him on Twitter at @joetrezz. This story was not subject to the approval of Major League Baseball or its clubs.