Houston Astros ace Justin Verlander pitched four innings Saturday night for Double-A Corpus Christi in what is expected to be his final minor league rehab outing before rejoining the major-league rotation.

The three-time Cy Young Award winner gave up six runs -- five earned -- and seven hits against the Frisco RoughRiders, a Texas Rangers affiliate. He struck out three, walked one and threw 51 of 77 pitches for strikes.

The 41-year-old Verlander opened the season on the injured list with inflammation in his right shoulder.