Flexen (3-15) picked up the win Thursday against the Angels, allowing five hits and one walk with seven strikeouts across 6.1 scoreless innings.
Flexen (2-15) took the loss against the Padres on Saturday, allowing four runs on eight hits and two walks over five innings while striking out three.
Flexen will be the de facto starter Wednesday for the resumption of Tuesday's suspended game versus the Rangers, Daryl Van Schouwen of the Chicago Sun-Times reports.
Flexen (2-11) allowed eight runs (six earned) on seven hits and three walks over 1.2 innings Sunday, striking out three and taking a loss against the Twins.
Flexen (2-10) took the loss against the Rangers on Wednesday, allowing three runs on seven hits and two walks over 4.2 innings while striking out three.
Flexen (2-9) yielded seven runs on four hits and five walks over 4.2 innings Friday, striking out four and taking a loss against Kansas City.
Flexen (2-8) took the loss against the White Sox on Saturday, allowing two runs on five hits and two walks with four strikeouts over six innings.
Flexen came away with a no-decision in the first game of Tuesday's doubleheader against the Nationals, giving up three runs on seven hits and a walk over 4.2 innings. He struck out five.
Flexen and the White Sox will not play Monday after their game against the Nationals was postponed due to inclement weather, LaMond Pope of the Chicago Tribune reports.
Flexen (2-3) earned the victory against Tampa Bay on Wednesday, allowing one run on three hits and one walk while striking out eight batters over six innings.