Josh Harrison has been placed on the 15-day disabled list after injuring his left thumb in the seventh inning of yesterday's game. Harrison will have a second opinion on the injury later this week, per a Pirates press release. Harrison appeared to have injured his thumb in his slide into second base yesterday, pictured in the image above.
This clears a roster spot for Travis Ishikawa, who was claimed from San Francisco yesterday. As for third base, my guess is that Jung-ho Kang will get playing time at third, with Jordy Mercer getting back in the lineup on a regular basis at shortstop.