Ryu was extended the $17.9 million qualifying offer from the Dodgers prior to Friday's deadline, Joel Sherman of the New York Post reports.
Ryu will get the start for Game 2 of the NLCS against Milwaukee on Saturday, J.P. Hoornstra of the Los Angeles Daily News reports.
Ryu (7-3) got the win against the Giants on Friday, giving up one earned run on four hits over six innings, striking out three and walking two in the Dodgers' 3-1 victory.
Ryu (6-3) allowed four hits and no walks while striking out eight across six scoreless innings to earn the win Sunday against the Padres.
Ryu (5-3) fired seven scoreless innings while giving up four hits and striking out five in a victory over the Rockies on Monday.
Ryu (4-3) was handed the loss in Tuesday's game against the Dodgers, allowing three runs on eight hits over five innings. He walked one and struck out six.
Ryu (4-2) took the loss Wednesday, giving up five runs (three earned) on 11 hits over six innings while striking out eight as the Dodgers fell 7-3 to the Mets.
Ryu didn't factor into the decision against the Diamondbacks on Friday, giving up two earned runs on four hits over seven innings, striking out five and walking none in the Dodgers' 3-2 victory.
Ryu will toe the rubber versus Arizona on Friday after the Dodgers elected to move Clayton Kershaw back an extra day, Ken Gurnick of MLB.com reports.
Ryu (4-1) allowed two earned runs on 11 hits and a walk while striking out eight across 5.2 innings to earn the win Sunday against the Padres.