If the Red Sox did make a claim and are awarded it, they would have 48 hours to work on a deal with the Nationals, or Washington could award him to the Red Sox or simply pull him back off waivers.
For Boston to be awarded the claim, every team with a worse record would have to pass on Guzman.
Guzman's contract, however, could scare off other teams. He is currently in the first year of a two-year, $16 million deal that pays him $8 million next season.
Guzman, 31, is batting .315 this season with five home runs and 39 RBIs in 92 games with Washington. He also hit .316 last season and was named to the National League All-Star team for the second time in his career.
Rhett Bollinger is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.