3:03 pm: Per Nubyjas Wilborn of the Pittsburgh Post-Gazette, Taillon will not throw for “at least” four weeks, with the injury apparently far more severe than originally believed. Rob Biertempfel of The Athletic tweets that Taillon’s MRI showed no UCL damage, though the righty will seek a second opinion next week to confirm.

1:55pm: Per a team release, the Pirates have placed righty Jameson Taillon on the 10-Day IL with a flexor strain in his right elbow and selected the contract of lefty Tyler Lyons from AAA-Indianapolis, among other roster moves.

It’s a concerning injury for Taillon, 27, who joins rotation mate Chris Archer on the injured list for a rotation-thin Pirate club. A 2014 Tommy John knocked the former 2nd overall pick out of action for two full seasons, though he’s been mostly healthy since. The 6’5 righty was off to his usual strong start this year, posting a a solid 88 FIP-/91 xFIP- (numbers right in line with his career figures and season projection) in seven starts for Pittsburgh.

It’s unclear who’ll step in to the vacant slots in the Pittsburgh rotation, though righty Nick Kingham and lefty Steven Brault appear to have the inside tracks. Top prospect Mitch Keller, who’d struggled early with command but has been dominant in his previous two Triple-A outings, is also a candidate.

Lyons, 31, spent six years with St. Louis before inking a minor league deal with Pittsburgh this offseason. His strikeout rate has jumped to over ten per nine in the last two seasons since a full-time move to the bullpen, but the lefty was hit hard in ’18 despite predominant left-on-left usage.