The Chicago Cubs reached a one-year, $4 million contract agreement with left-hander Tsuyoshi Wada on Tuesday.
Wada was called up from the minor leagues in July and posted a 4-4 record with a 3.25 ERA in 13 starts for the Cubs.
The deal with the Cubs includes the potential to earn $2 million in bonuses for games started.
The Japanese pitcher originally signed a minor league deal with Chicago last December.
After nine years in the Japanese league, Wada signed with the Baltimore Orioles before the 2012 season but suffered a tear in his elbow and had Tommy John reconstruction surgery.