Tsuyoshi Wada didn't throw as scheduled on Sunday due to a hamstring injury.
Cubs re-signed LHP Tsuyoshi Wada to a one-year, $4 million contract.
Tsuyoshi Wada yielded two earned runs over five innings Saturday in a loss to the Brewers.
Tsuyoshi Wada got a no-decision on Thursday after allowing just one run over five innings in Thursday's 8-4 loss to the Dodgers.
Tsuyoshi Wada was chased after giving up four runs over 4 1/3 innings Friday in a loss to the Pirates.
Tsuyoshi Wada left Friday's game due to mild left camp cramping, the Cubs revealed.
Tsuyoshi Wada left Friday's game against the Pirates in the fourth inning with an undisclosed injury.
Tsuyoshi Wada allowed four runs -- three earned -- over six innings as the Cubs dropped the second half of Saturday's doubleheader against the Cardinals.
Tsuyoshi Wada held the Orioles to only a solo home run over 6 1/3 innings in a win on Sunday.
Tsuyoshi Wada got the win with five shutout innings as play resumed on Thursday from Tuesday's rain-shortened match-up with the Giants.
Tsuyoshi Wada yielded two runs in 6 2/3 innings Wednesday in defeating the Brewers.
Tsuyoshi Wada delivered another strong start in a no-decision against the Rays on Friday, allowing two runs on four hits over his six-plus frames.
Tsuyoshi Wada yielded two runs in 5 2/3 innings Saturday in a no-decision against the Dodgers.
Tsuyoshi Wada allowed just one run over seven innings to beat the Rockies on Monday.