The morning after Harper slipped on a wet base, hyperextended his left knee and crumpled to the dirt in pain, the Nationals announced that he has been diagnosed with a "significant" bone bruise.
The ugly-looking scene itself unfolded when Harper attempted to leg out a ground ball in the first inning.
Harper walking up the stairs provided some hope, and an MRI revealed what the Washington Nationals hope is season-saving news.
Saturday's home game began just after 10 p.m. ET, following a three-hour rain delay, and it was raining steadily when Harper's injury happened.
As a result of the rainout, Nationals manager Dusty Baker had to wait another day to catch Bochy on the all-time wins list.
Harper was making an MVP case for himself before the injury with a slash line of.326/.419/.614 to go with 29 home runs and 87 RBI.
San Francisco Giants' Buster Posey looks on during batting practice before a baseball game against the Washington Nationals, Saturday, Aug. 12, 2017, in Washington. He was not made available to speak to reporters. Given injuries to Harper, Stephen Strasburg - who has a rehab assignment Monday - and others, the Nationals' focus is getting healthy for the playoffs. Kolko also added Michael A. Taylor will come off the disabled list to take Harper's spot on the roster while the latter heads to the DL. The Nationals now lead the Giants 2-1 in the bottom of the third inning.
"He's definitely one of those guys that you can't replace on a team". "You're just thinking, 'Please, Lord, don't let it be serious'". He was carried off the field without putting weight on his left leg.
The Giants and Nationals will square off twice on Sunday in a split doubleheader to make up for Friday's postponement, as San Francisco will send Chris Stratton to the mound in the first game and lefty Matt Moore to the hill in game two.