Rockies will keep four-man rotation, 75-pitch limits for 2013

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Colorado’s switch to a four-man rotation with starters on 75-pitch limits hasn’t exactly worked wonders, but the Rockies are sticking with that setup for the remainder of this season and plan to continue using it next year as well.

Troy Renck of the Denver Post reports that they’ll make a slight change, essentially pairing each starter with a “piggyback” reliever who’ll be expected to throw around 50 pitches. And in theory 75 pitches from the starter and 50 pitches from the reliever would get the Rockies deep enough into games to then rely on more traditional bullpen usage.

Coors Field and pitching at altitude has made it extremely tough for the Rockies to get consistently good or even decent starting pitching for basically their entire existence, so experimenting makes some sense and pairing pitchers is an interesting concept. Of course, it’s worth noting that the switch to a four-man rotation hasn’t really done much good so far.

Before the switch Rockies starters had a 6.28 ERA and since the switch Rockies starters have a 5.61 ERA. So they’ve been better but still really, really bad and the extra stress placed on relievers has caused the bullpen ERA to rise from 4.00 before the switch to 4.52 since. Basically all the improvement with the rotation has been canceled out by the bullpen getting worse (and throwing more innings).

Overall their team ERA was 5.38 before the switch and is 5.04 after the switch.

Clayton Kershaw might return to the Dodgers’ rotation next week

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Dodgers southpaw Clayton Kershaw is nearing his return to the mound, according to club manager Dave Roberts. Both Kershaw (left biceps tendinitis) and fellow lefty Rich Hill (left middle finger blister) are scheduled to toss simulated games on Saturday; depending on the outcome, Roberts says Kershaw could forgo a minor league assignment and slot back into the rotation by Thursday.

Kershaw, 30, was diagnosed with biceps tendinitis as the team closed out their Mexico Series at the start of the month. He has not made a start in several weeks, but was finally able to resume throwing on Sunday and managed to get through two successful bullpen sessions. Though Dodgers’ ace hasn’t been completely injury-free over his 11-year career in the majors, this is the first significant issue he’s had with his pitching arm so far. The team is expected to take every precaution with the lefty, and will likely limit him to just four innings during Saturday’s simulated game.

Prior to his injury, Kershaw was working on another dominant run with the club, sporting a 2.86 ERA, 2.0 BB/9 and 9.8 SO/9 through his first 44 innings of the season. While Kershaw, Hill and left-handed starter Hyun-Jin Ryu served their respective terms on the disabled list this month, the Dodgers utilized a combination of relievers Ross Stripling and Brock Stewart, both of whom impressed during their limited time in the rotation.