Mark Felger performed a double vessel bypass there at 3 p.m. Gottsch said the surgery was a success.
Blake said Ryan is expected to be hospitalized for about a week.
The Detroit Tigers placed starting pitcher Brian Moehler on the 15-day disabled list and recalled pitcher Dave Borkowski from Toledo.
Moehler, whose last start April 16 was a no-decision against Tampa Bay, underwent an emergency appendectomy Saturday at Christ Hospital in Oak Lawn, Ill. He is 1-1 with a 3.93 ERA in three starts this year.
Borkowski was 1-0 with a 2.81 ERA in three starts for Toledo. He appeared in 17 games for the Tigers last year, starting 12, and went 2-6 with a 6.10 ERA.
Marlins owner John Henry said his first priority was "to keep this team together" despite a published report that he would dismantle the roster if efforts to build a new stadium failed.
Henry said a Fort Lauderdale Sun-Sentinel reporter misunderstood him in a published report Saturday that said the Marlins could begin trading away players for financial reasons before next season.
Marlins general manager Dave Dombrowski was surprised by the article.
Henry said he has no intention of duplicating Wayne Huizenga's public-relations gaffe of dismantling the 1997 World Series championship team.
Tony Saunders, the Tampa Bay pitcher who suffered a broken left arm last year, threw off a bullpen mound for the second time in three days.
Saunders fractured his left humerus - the bone from the shoulder to the elbow - in a game against Texas.
Three other pitchers since 1989 - Dave Dravecky, Tom Browning and John Smiley - have had similar injuries but never fully recovered.
The Chicago White Sox activated third baseman Herbert Perry, two days after claiming him off waivers from the Tampa Bay Devil Rays.
Perry, 30, hit .214 with one run batted in over seven games with the Devil Rays this season.
The White Sox optioned outfielder McKay Christensen to their triple-A Charlotte affiliate to make roster room for Perry.