Extra bases

• Cubs pitcher Jake Arrieta struck out four and gave up three hits over 3 2/3 scoreless innings in his second rehab start for Double-A Tennessee on Thursday. He threw 66 pitches, 40 for strikes, against Chattanooga.

Arrieta was slowed this spring because of tightness in his right shoulder. There is no timetable for Arrieta's return.

• James McDonald (shoulder) and Kyuji Fujikawa (elbow) are both continuing their rehab at the Cubs' Mesa, Ariz., complex.