Baseball legend Nolan Ryan was released from a Houston hospital on Tuesday.

Texas Rangers officials said Ryan, 64, experienced discomfort at his home in Georgetown, Texas, on Sunday.

Ryan spent two nights at St. Luke's Hospital. He underwent tests for what was believed to be a recurrence of a heart condition.

Ryan had a double-bypass operation in 2000. Doctors at that time also discovered another, undisclosed condition.

Ryan was also hospitalized in 2007 because of a pre-existing condition.

Ryan is the president and chief executive officer of the Texas Rangers. His playing career spanned 27 years and included time with the California Angels, New York Mets, Houston Astros and Texas Rangers.

Ryan had been expected to join the Rangers in Anaheim, Calif., on Tuesday night for the start of a three-game series between his AL West-leading club and the Angels, who are in second place, four games back. He was scheduled to throw out the ceremonial first pitch and to take part in a ceremony inducting Gene Autry, the Angels' late owner, into the team's Hall of Fame.

Ryan is a member of the baseball Hall of Fame, holding the records for most no-hitters (seven) and strikeouts (5,714). He's been running the Rangers since 2008 and became part-owner last summer. Texas went to the World Series for the first time last fall.