All signs point to Astros' Dallas Keuchel starting Friday or Saturday

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PHILADELPHIA - The expectation remains that Dallas Keuchel will return to the Astros' rotation Friday or Saturday in Detroit but manager A.J. Hinch won't make an official determination until after the ace lefthander throws his bullpen session Tuesday at Citizens Bank Park.

Collin McHugh will start whichever weekend game Keuchel doesn't. Lance McCullers Jr. will start Sunday afternoon's series finale against the Tigers.

McHugh also will throw a bullpen session Tuesday. Keuchel and McHugh both pitched Saturday, Keuchel in a rehab start, McHugh for the Astros, so the decision boils down to which pitcher the Astros want to give an extra day of rest.

Hinch said the order of Keuchel and McHugh for the weekend will be determined Tuesday or Wednesday.