The Houston Astros signed free-agent relief pitcher Steve Cishek to a minor league deal with an invitation to spring training on Tuesday. The veteran right-hander has a 2.78 ERA in 594 career relief appearances with a .214 average against and 132 saves in 10-plus major league seasons. He's held right-handed hitters to a .204 average and has had an ERA of 2.81 or lower in seven of his 10 full seasons. Cishek made 20 appearances with the White Sox last season and had a 5.40 ERA with 21 strikeouts ...