Nationals right fielder Bryce Harper left Washington's 3-1 victory over the San Francisco Giants on Saturday night in the first inning with a left knee injury after his left foot slipped on the first base bag as he tried to beat out a groundball to first baseman Ryder Jones.
Harper had to be carried off after not being able to put any weight on the leg.
"The good news is that there's no ligament or tendon damage, which is pretty remarkable in my mind just seeing the type of injury that he had", Rizzo said.
Harper clutched at his left knee after going down and was attended to by trainers. It looked like he slipped on the bag. Washington has around two months until the postseason begins, so that gives Harper plenty of time to get back to 100 percent.
While the injury itself looked bad, the Nationals and Harper appeared to have dodged a major bullet here. Should the knee injury necessitate a trip to the disabled list, it'll be his first stint on the DL since undergoing thumb surgery in 2014.
Saturday's game started after a three-hour rain delay in D.C., and it's unclear how much the damp conditions affected the basepaths.
Washington (69-45) has a 14.5 games lead on the Miami Marlins in the National League East. The first game takes place at 1:05 p.m. ET, with the second meeting set for 7:05 p.m. ET.
Harper is now one of the leaders in the NL MVP race and is hitting.326 with 29 home runs and 87 RBI.
Washington did not advance a runner to scoring position until the seventh.
That's especially important considering Harper can be a free agent after the 2018 season, crystallizing Washington's championship window with Max Scherzer in his prime and a lineup built with power around the 29-year-old face of the franchise, Daniel Murphy, Trea Turner, Anthony Rendon and Ryan Zimmerman.