The Cardinals are already known to be in the market for left-handed relief help, and their need may have intensified, as Derrick Goold of the St. Louis Post-Dispatch reports that southpaw Tyler Lyons underwent surgery to correct “ongoing pain and trouble with the joint” — a procedure which GM John Mozeliak says will sideline the 28-year-old for five to six months.
[Related: St. Louis Cardinals Depth Chart]
A best-case scenario, it would seem, would have Lyons available to the Cardinals in mid-May, although certainly with any type of significant surgical procedure there’s a chance of setbacks and/or a prolonged rehabilitation process.
Lyons, 29 in February, posted a 3.38 ERA with a 46-to-14 K/BB ratio in 48 innings out of the St. Louis bullpen this past season and has a 3.58 ERA in 108 innings dating back to 2015. He was especially tough on left-handed hitters in 2016, limiting same-handed opponents to a laughable .156/.214/.250 batting line. With Lyons on the shelf for the early portion of the 2017 season, at least, Zach Duke out for the entire year following Tommy John surgery and another depth option (Dean Kiekhefer) lost to the Mariners on waivers, left-handed relief will unquestionably be a point of focus for the Cards in the months to come. As it stands, Kevin Siegrist again projects to be the top lefty in manager Mike Matheny’s bullpen, with other options including Marco Gonzales, Tim Cooney, Ryan Sherriff and Corey Littrell.
If the Cardinals look outside the organization, though, the free agent market bears a number of options, including Brett Cecil, Boone Logan, Jerry Blevins and Mike Dunn, among others.

