Eyre, 32, spent the 2010 season at Triple-A in the Rangers organization. He posted a 3.50 ERA with 7.4 K/9 and 3.1 BB/9 in 72 innings. His big league numbers are less impressive, though. Eyre has a 5.14 ERA with 4.7 K/9 and 3.7 BB/9 in 92 career games.
Blackley, who turned 28 yesterday, last pitched in the major leagues in 2007. The Australia native pitched to a 2.52 ERA with 8.8 K/9 and 5.6 BB/9 in 35 2/3 Triple-A innings for the A's this year.