The injury bothers Billingsley mostly when he is throwing his curveball, which he did not use during the bullpen session. He did flip a few curveballs off flat ground.
Billingsley said the discomfort has lessened considerably since Monday, when he was able to drain blood that pooled beneath the fingernail. He said the area is bothered when he throws a fastball, cutter or changeup.
It hasn't been determined whether Billingsley will start in a Cactus League game or a Minor League game. Also pitching Saturday for the Dodgers will be Hyun-Jin Ryu.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.