Lyles struggles in Minors start

Rockies pitcher has had up-and-down spring

Lyles struggles in Minors start

SCOTTSDALE, Ariz. -- Rockies right-hander Jordan Lyles' up-and-down Spring Training numbers experienced another dip Wednesday, when he allowed five runs (four earned) and six hits in 4 1/3 innings in a Minor League camp game.

Lyles struck out four and walked four while pitching for Triple-A Albuquerque against Double-A Hartford.

Lyles' outing did not count as part of his Cactus League statistics, which show him as 0-2 with a 5.56 ERA in six games, including three starts. In his last official outing, he entered in relief and held the Angels scoreless with one strikeout, two hits and a walk in four innings pitched.

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Lyles has been working on his secondary pitches and his pacing, as he tries to turn the page on an injury-shortened 2015.

Lyles suffered a right big toe ligament injury that required season-ending surgery after 10 starts, when he went 2-5 with a 5.14 ERA. The success of the Rockies' 2016 rotation is highly dependent on Lyles and Tyler Chatwood, who has been sidelined since April 2014 after having Tommy John surgery, returning effectively.

Thomas Harding is a reporter for MLB.com. Read his blog, Hardball in the Rockies, follow him on Twitter @harding_at_mlb, and like his Facebook page, Thomas Harding and Friends at www.Rockies.com. This story was not subject to the approval of Major League Baseball or its clubs.