The Dodgers, Nationals, Red Sox, and Tigers are among the many teams already showing interest in O'Day, reports Jon Heyman of CBS Sports. Baltimore is "trailing at present," according to Heyman.
The right-handed O'Day was named to his first All-Star Game this season, after going 6-2 with a 1.52 ERA (2.49 FIP) in 65 1/3 innings pitched, striking out 82 and walking just 14.
O'Day's has had continued success out of the bullpen, being a shutdown reliever for quite some time. Over his past four seasons combined, O'Day has a minuscule 1.92 ERA.
The Dodgers, Nationals, Red Sox, and Tigers all make sense for the submarining O'Day, as their bullpens all had noted struggles over the 2015 season, in one form or another.