Wesneski (forearm) will throw a live batting practice session Wednesday, Maddie Lee of the Chicago Sun-Times reports.
It will be Wesneski's first time facing hitters since he went down with a right forearm strain more than a month ago. The right-hander would appear to be closing in on a rehab assignment, with a return in early September likely. Wesneski holds a 3.94 ERA and 58:21 K:BB over 61.2 innings in a swingman role for the Cubs this season.