To make room for the pair of relievers, the Cardinals optioned left-handed pitcher Marc Rzepczynski and right-handed pitcher Fernando Salas to Memphis. The two combined to give up five runs in Monday's series-opening loss at Pittsburgh.
Butler, a 24-year-old rookie, has also appeared at three levels this year. He is 1-2 with a 2.81 ERA and 8 saves between Springfield and Memphis and has posted a 1.98 ERA in 12 games (13.2 IP) for St. Louis. Butler has fanned 11 and walked seven.
Lyons, 25, made six starts for the Cardinals earlier this year, going 2-3 with a 5.51 ERA. Since returning to Memphis in late June, the rookie left-hander has gone 4-0 with a 1.65 ERA (32.2 IP/6 ER) in six starts, working into the seventh inning in all but two of those outings while striking out 37 and walking eight. Lyons' overall season mark at Memphis stands at 6-1 with a 3.00 ERA in 14 games started (87.0 IP) with 75 strikeouts and a .226 opponent's batting average.
Rzepczynski was recalled from Memphis on July 25 to serve as a temporary third lefty after he was optioned out on April 29. Since returning to St. Louis, the 25-year-old appeared in two games, allowing two earned runs in 2 1/3 innings. He struck out one and walked one. Opposing batters hit .375 against him.
Salas, 28, returned to St. Louis on July 18 from Memphis. He pitched 4 1/3 innings over four games, allowing five runs, four earned, for an 8.31 ERA. Salas fanned four and walked two. Opposing hitters had a .368 average against him.
The Mexican native began the season with St. Louis, but the right-hander went on the disabled list on May 22 due to shoulder inflammation. Salas began a rehab stint with Memphis on June 19 and was optioned to the Triple-A club for the first time this season seven days later.
To see the Cardinals entire 40-man roster and all of the minor leaguers in the system, check out the Roster Matrix at The Cardinal Nation blog.
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Brian Walton can be reached via email at firstname.lastname@example.org. Also catch his Cardinals commentary daily at The Cardinal Nation blog. Follow Brian on Twitter.
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