Angels manager Mike Scioscia said that Aybar, who's been sidelined since April 3 with a left oblique strain, will work out through the weekend and possibly be activated on Monday. In three games this year, Aybar is 5-for-12 with three doubles and two RBIs.
Pineiro, out with right shoulder tenderness, is expected to throw a bullpen session and probably a simulated game during his time in Arizona.
"We're debating whether [the simulated game will] be Saturday, Sunday or Monday," Scioscia said, "depending on how his bullpens go."
Scott Kazmir will spend the weekend in Houston and then join the Angels for their three-game series in Arlington, Texas, against the Rangers starting on Monday. Kazmir lasted just 1 2/3 innings in his only start of the season, giving up five runs on five hits on April 3 in Kansas City. Kazmir was placed on the 15-day disabled list on April 8 (retroactive to April 4) with lower back soreness.