Papelbon has been placed on the 15-day disabled list, retroactive to June 13, due to a right intercostal strain.

EDGE Analysis

With Papelbon unavailable due to undisclosed soreness, Shawn Kelley picked up his first save of the season in Monday's 4-1 win over the Cubs. Kelley is seemingly the favorite to get most of the ninth-inning work, but lefty Felipe Rivero could also be in the mix. The Nationals might decide to play matchups, deploying Rivero and the right-handed Kelley in whatever order makes sense within a given game. Papelbon won't be eligible to return until June 28, and he could miss quite a bit more time, as intercostal strains typically sideline pitchers beyond the minimum 15 days.