Series preview: Cardinals at Cubs
All games on WSCR-AM 670.
Season series: Cubs 6-3.
Friday: 1:20 p.m., ABC-7.
RH Carlos Martinez (6-8, 3.36) vs. RH Jake Arrieta (9-7, 4.17).
Saturday: 3:05 p.m., CSN, FS1.
RH Adam Wainwright (11-5, 5.08) vs. LH Jon Lester (6-6, 4.07).
Sunday: 7:05 p.m., ESPN.
RH Michael Wacha (7-3, 3.71) vs. LH Jose...