Tyler Thornburg to make Brewers debut in place of injured Shaun Marcum

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Shaun Marcum was scratched from tonight’s scheduled start with elbow soreness and the Brewers are calling on Double-A right-hander Tyler Thornburg to make his MLB debut in his place against the Blue Jays.

Thornburg, who was Milwaukee’s third-round pick out of Charleston Southern in 2010, has thrived at every level of the minors with a 2.64 ERA and 269 strikeouts in 239 innings.

That includes a 3.00 ERA and 71/24 K/BB ratio in 74 innings at Double-A this season, although with just 13 starts above Single-A and zero Triple-A experience the Brewers are definitely rushing the 23-year-old to the majors because of their injury situation.

For now the Brewers are hoping that Marcum can avoid the disabled list and miss just one turn in the rotation.

Pirates set to promote top prospect Mitch Keller

Mitch Keller
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MLB.com’s Jonathan Mayo reports that the Pirates will promote top pitching prospect Mitch Keller in advance of their doubleheader against the Reds on Monday. Confirmation of the move is still pending an official announcement, but Keller will reportedly face off against Sonny Gray in Game 2.

Keller, 23, is currently listed as the Pirates’ no. 1 prospect and the no. 16 overall prospect in the league, per MLB.com. He was selected in the second round of the 2014 amateur draft and has spent the last six years refining his technique in Pittsburgh’s farm system, where he recently made the jump to Triple-A Indianapolis in 2018. So far this season, he’s 5-0 in nine starts with a 3.45 ERA, 3.8 BB/9, and 10.7 SO/9 through 47 innings.

It’s not clear how long of a leash the Pirates will give Keller, though given the current state of their rotation — down to four serviceable starters with Jameson Taillon on the 60-day injured list (right elbow flexor strain), Trevor Williams on the 10-day IL (right side strain), and a handful of replacements yet to impress — they may be inclined to keep him on a little longer than his spot start requires.