Harper was taken out of Wednesday night's game against St. Louis before the bottom of the fourth inning with tight glutes.
Analysis: Harper was 0 for 2 in the game, taking a called third strike in the first inning and lining out softly to second in the fourth. Matt den Dekker replaced Harper in center field and was batting third for Washington.
Goldschmidt has left the Diamondbacks to be with his wife for the birth of the couple's first child.
Analysis: Goldschmidt left Denver for Phoenix on a flight late Tuesday night. Manager Chip Hale said Goldschmidt would miss Wednesday's game against the Rockies and most likely Friday's game at the Chicago Cubs. Hale expects Goldschmidt to rejoin the team in Chicago this weekend. Goldschmidt entered Wednesday third in the league in hitting at .322. He has 27 home runs and 97 RBIs, second in the NL.
The Rockies recalled Brown from Triple-A Albuquerque on Wednesday.
Analysis: Brown is making his third appearance on Colorado's roster. He last pitched for the Rockies on June 16 before going on the 15-day disabled list two days later with right shoulder inflammation. He was activated Aug. 22 and optioned to Albuquerque. Brown is 0-2 with a 3.86 ERA in 24 games for Colorado.
Kemp went 3 for 4 with a home run and four RBIs Tuesday against Texas.
Analysis: Kemp's overall numbers may be a bit disappointing, but they've been excellent of late. He's batting .350 with six homers and 26 RBIs since Aug. 8, hitting safely in 19 of 20 games over that stretch.
Strasburg won't make his next scheduled start for the Washington Nationals on Friday. Strasburg was limited to four innings by upper back tightness his last outing. The right-hander is scheduled to throw an extended bullpen session Thursday and manager Matt Williams said Strasburg would need at least two days after that before pitching.
Analysis: Williams said it was possible that Strasburg, 8-6 with a 4.35 ERA, could be inserted into the rotation before his next turn but reserved judgment until after the session.