The Astros recalled Whitcomb from Triple-A Sugar Land on Monday.
He'll join the 26-man active roster as a replacement for infielder Nick Allen (hamstring), who landed on the 10-day injured list. Whitcomb is capable of handling every position other than center field and catcher, but he hardly played during his last stint with the big club and may not be in line for many at-bats this time around either.