McCullers allowed two runs on two hits and two walks with seven strikeouts over 6.1 innings Monday during Game 4 of the ALDS against Kansas City. He was in line for the win, but did not factor into the decision as the Royals tagged the Astros' bullpen for seven runs to come from behind and win the game.
Castro was hitless Monday during Houston's Game 4 ALDS loss to Kansas City. He struck out in all three of his at-bats before Jed Lowrie replaced him as a pinch-hitter in the bottom of the eighth inning.
Rubio (quad) returned to practice, but isn't expected to play in Monday's preseason game against the Raptors, Alan Horton of WCCO 830 AM reports. Coach Sam Mitchell said he's hopeful Rubio can make his preseason debut Sunday at Memphis, the Minneapolis Star Tribune reports.
Keselowski and the No. 2 Detroit Genuine Parts Ford team qualified 13th, fought for track position most of the day and brought home a ninth-place finish in Sunday's rain-delayed Bank of America 500 at Charlotte Motor Speedway, teampenske.com reports.