Houston Astros starter Aaron Sanchez is headed to the injured list with a sore pectoral muscle after leaving his start early, manager A.J. Hinch told reporters Tuesday.

Hinch described Sanchez's pectoral as being sore and also pointed to the former Toronto Blue Jay's velocity being down lately. The right-hander left his Tuesday start in the third inning, giving way to Brad Peacock.

Coming into Tuesday, Sanchez was 2-0 with an ERA of 3.86, far better than his 6.07 ERA in 23 starts for the Blue Jays earlier this year. 

The Astros took down the Detroit Tigers 6-3 Tuesday night, their second win in as many days against Detroit.