Jason Hammel has been a mess on the mound since joining the Athletics. That mess got worse Wednesday in Houston.
Hammel was bombed for six runs in the first inning and yielded eight in 4 1/3 to lower his record to 0-4 with Oakland. He surrendered seven hits, including home runs to Jon Singleton and Robbie Grossman, while walking three and fanning four.
The right-hander, who has allowed 16 runs and five taters in 16 innings since the deal, will attempt to turn it around Tuesday against Tampa Bay.