“Blisters can be funny,” Maddon said. “Right now, we haven’t called off the jam yet. But you want to look at it, I would say, after maybe another day or two [and] then try to make our best determination at that point.”
Arrieta is scheduled to throw a bullpen session on Saturday. He is coming off a start where he surrendered five runs in 1/3 of an inning with 34 pitches.
He is coming off a season in which he finished 22–6 with a 1.77 ERA in about 250 innings.
The Cubs will open the season against the Los Angeles Angels of Anaheim on April 4.